diff --git a/docs/reference/classes/ReactFireError.md b/docs/reference/classes/ReactFireError.md
index 591ddb68..31c99ccb 100644
--- a/docs/reference/classes/ReactFireError.md
+++ b/docs/reference/classes/ReactFireError.md
@@ -6,7 +6,7 @@
 
 # Class: ReactFireError
 
-Defined in: [src/index.ts:12](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L12)
+Defined in: [src/index.ts:13](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L13)
 
 ## Extends
 
@@ -18,7 +18,7 @@ Defined in: [src/index.ts:12](https://github.com/FirebaseExtended/reactfire/blob
 
 > **new ReactFireError**(`code`, `message`, `customData?`): `ReactFireError`
 
-Defined in: [src/index.ts:15](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L15)
+Defined in: [src/index.ts:16](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L16)
 
 #### Parameters
 
@@ -60,7 +60,7 @@ Defined in: node\_modules/typescript/lib/lib.es2022.error.d.ts:24
 
 > `readonly` **code**: `string`
 
-Defined in: [src/index.ts:15](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L15)
+Defined in: [src/index.ts:16](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L16)
 
 ***
 
@@ -68,7 +68,7 @@ Defined in: [src/index.ts:15](https://github.com/FirebaseExtended/reactfire/blob
 
 > `optional` **customData?**: `Record`\<`string`, `unknown`\>
 
-Defined in: [src/index.ts:15](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L15)
+Defined in: [src/index.ts:16](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L16)
 
 ***
 
@@ -88,7 +88,7 @@ Defined in: node\_modules/typescript/lib/lib.es5.d.ts:1075
 
 > `readonly` **name**: `"ReactFireError"` = `'ReactFireError'`
 
-Defined in: [src/index.ts:13](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L13)
+Defined in: [src/index.ts:14](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L14)
 
 #### Overrides
 
diff --git a/docs/reference/functions/checkIdField.md b/docs/reference/functions/checkIdField.md
index 82d7c5a9..24bd01d2 100644
--- a/docs/reference/functions/checkIdField.md
+++ b/docs/reference/functions/checkIdField.md
@@ -8,7 +8,7 @@
 
 > **checkIdField**(`options`): `any`
 
-Defined in: [src/index.ts:47](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L47)
+Defined in: [src/index.ts:48](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L48)
 
 ## Parameters
 
diff --git a/docs/reference/functions/checkOptions.md b/docs/reference/functions/checkOptions.md
index 4f4fdaf0..98cdacfc 100644
--- a/docs/reference/functions/checkOptions.md
+++ b/docs/reference/functions/checkOptions.md
@@ -8,7 +8,7 @@
 
 > **checkOptions**(`options`, `field`): `any`
 
-Defined in: [src/index.ts:34](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L34)
+Defined in: [src/index.ts:35](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L35)
 
 ## Parameters
 
diff --git a/docs/reference/functions/checkinitialData.md b/docs/reference/functions/checkinitialData.md
index f2c78405..fb4b2bd0 100644
--- a/docs/reference/functions/checkinitialData.md
+++ b/docs/reference/functions/checkinitialData.md
@@ -8,7 +8,7 @@
 
 > **checkinitialData**(`options`): `any`
 
-Defined in: [src/index.ts:43](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L43)
+Defined in: [src/index.ts:44](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L44)
 
 ## Parameters
 
diff --git a/docs/reference/functions/useAnalytics.md b/docs/reference/functions/useAnalytics.md
index 1a8eb2eb..5fb3cf0b 100644
--- a/docs/reference/functions/useAnalytics.md
+++ b/docs/reference/functions/useAnalytics.md
@@ -8,7 +8,7 @@
 
 > **useAnalytics**(): `Analytics`
 
-Defined in: [src/sdk.tsx:84](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L84)
+Defined in: [src/sdk.tsx:110](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L110)
 
 ## Returns
 
diff --git a/docs/reference/functions/useAppCheck.md b/docs/reference/functions/useAppCheck.md
index 0a8f8e45..22877d3a 100644
--- a/docs/reference/functions/useAppCheck.md
+++ b/docs/reference/functions/useAppCheck.md
@@ -8,7 +8,7 @@
 
 > **useAppCheck**(): `AppCheck`
 
-Defined in: [src/sdk.tsx:82](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L82)
+Defined in: [src/sdk.tsx:108](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L108)
 
 ## Returns
 
diff --git a/docs/reference/functions/useAuth.md b/docs/reference/functions/useAuth.md
index fd9a7056..1c5e129b 100644
--- a/docs/reference/functions/useAuth.md
+++ b/docs/reference/functions/useAuth.md
@@ -8,7 +8,7 @@
 
 > **useAuth**(): `Auth`
 
-Defined in: [src/sdk.tsx:83](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L83)
+Defined in: [src/sdk.tsx:109](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L109)
 
 ## Returns
 
diff --git a/docs/reference/functions/useDatabase.md b/docs/reference/functions/useDatabase.md
index 1efac90b..fb56002b 100644
--- a/docs/reference/functions/useDatabase.md
+++ b/docs/reference/functions/useDatabase.md
@@ -8,7 +8,7 @@
 
 > **useDatabase**(): `Database`
 
-Defined in: [src/sdk.tsx:85](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L85)
+Defined in: [src/sdk.tsx:111](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L111)
 
 ## Returns
 
diff --git a/docs/reference/functions/useFirestore.md b/docs/reference/functions/useFirestore.md
index 648d679b..64bb6a10 100644
--- a/docs/reference/functions/useFirestore.md
+++ b/docs/reference/functions/useFirestore.md
@@ -8,7 +8,7 @@
 
 > **useFirestore**(): `Firestore`
 
-Defined in: [src/sdk.tsx:86](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L86)
+Defined in: [src/sdk.tsx:112](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L112)
 
 ## Returns
 
diff --git a/docs/reference/functions/useFunctions.md b/docs/reference/functions/useFunctions.md
index bd5a2ade..b17af0c1 100644
--- a/docs/reference/functions/useFunctions.md
+++ b/docs/reference/functions/useFunctions.md
@@ -8,7 +8,7 @@
 
 > **useFunctions**(): `Functions`
 
-Defined in: [src/sdk.tsx:87](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L87)
+Defined in: [src/sdk.tsx:113](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L113)
 
 ## Returns
 
diff --git a/docs/reference/functions/useObservable.md b/docs/reference/functions/useObservable.md
index fd5579c0..8cd79f94 100644
--- a/docs/reference/functions/useObservable.md
+++ b/docs/reference/functions/useObservable.md
@@ -8,7 +8,7 @@
 
 > **useObservable**\<`T`\>(`observableId`, `source`, `config?`): [`ObservableStatus`](../interfaces/ObservableStatus.md)\<`T`\>
 
-Defined in: [src/useObservable.ts:68](https://github.com/FirebaseExtended/reactfire/blob/main/src/useObservable.ts#L68)
+Defined in: [src/useObservable.ts:82](https://github.com/FirebaseExtended/reactfire/blob/main/src/useObservable.ts#L82)
 
 ## Type Parameters
 
diff --git a/docs/reference/functions/usePerformance.md b/docs/reference/functions/usePerformance.md
index 0ff1b523..30b2aefe 100644
--- a/docs/reference/functions/usePerformance.md
+++ b/docs/reference/functions/usePerformance.md
@@ -8,7 +8,7 @@
 
 > **usePerformance**(): `FirebasePerformance`
 
-Defined in: [src/sdk.tsx:88](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L88)
+Defined in: [src/sdk.tsx:114](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L114)
 
 ## Returns
 
diff --git a/docs/reference/functions/useRemoteConfig.md b/docs/reference/functions/useRemoteConfig.md
index 78b14879..ec2894ce 100644
--- a/docs/reference/functions/useRemoteConfig.md
+++ b/docs/reference/functions/useRemoteConfig.md
@@ -8,7 +8,7 @@
 
 > **useRemoteConfig**(): `RemoteConfig`
 
-Defined in: [src/sdk.tsx:90](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L90)
+Defined in: [src/sdk.tsx:116](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L116)
 
 ## Returns
 
diff --git a/docs/reference/functions/useStorage.md b/docs/reference/functions/useStorage.md
index 74d28fe2..765a17ae 100644
--- a/docs/reference/functions/useStorage.md
+++ b/docs/reference/functions/useStorage.md
@@ -8,7 +8,7 @@
 
 > **useStorage**(): `FirebaseStorage`
 
-Defined in: [src/sdk.tsx:89](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L89)
+Defined in: [src/sdk.tsx:115](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L115)
 
 ## Returns
 
diff --git a/docs/reference/interfaces/ObservableStatus.md b/docs/reference/interfaces/ObservableStatus.md
index 6b916f26..362078a4 100644
--- a/docs/reference/interfaces/ObservableStatus.md
+++ b/docs/reference/interfaces/ObservableStatus.md
@@ -6,7 +6,7 @@
 
 # Interface: ObservableStatus\<T\>
 
-Defined in: [src/useObservable.ts:31](https://github.com/FirebaseExtended/reactfire/blob/main/src/useObservable.ts#L31)
+Defined in: [src/useObservable.ts:45](https://github.com/FirebaseExtended/reactfire/blob/main/src/useObservable.ts#L45)
 
 ## Type Parameters
 
@@ -20,7 +20,7 @@ Defined in: [src/useObservable.ts:31](https://github.com/FirebaseExtended/reactf
 
 > **data**: `T`
 
-Defined in: [src/useObservable.ts:57](https://github.com/FirebaseExtended/reactfire/blob/main/src/useObservable.ts#L57)
+Defined in: [src/useObservable.ts:71](https://github.com/FirebaseExtended/reactfire/blob/main/src/useObservable.ts#L71)
 
 The most recent value.
 
@@ -32,7 +32,7 @@ If `initialData` is passed in, the first value of `data` will be the valuea prov
 
 > **error**: `Error` \| `undefined`
 
-Defined in: [src/useObservable.ts:61](https://github.com/FirebaseExtended/reactfire/blob/main/src/useObservable.ts#L61)
+Defined in: [src/useObservable.ts:75](https://github.com/FirebaseExtended/reactfire/blob/main/src/useObservable.ts#L75)
 
 Any error that may have occurred in the underlying observable
 
@@ -42,7 +42,7 @@ Any error that may have occurred in the underlying observable
 
 > **firstValuePromise**: `Promise`\<`void`\>
 
-Defined in: [src/useObservable.ts:65](https://github.com/FirebaseExtended/reactfire/blob/main/src/useObservable.ts#L65)
+Defined in: [src/useObservable.ts:79](https://github.com/FirebaseExtended/reactfire/blob/main/src/useObservable.ts#L79)
 
 Promise that resolves after first emit from observable
 
@@ -52,7 +52,7 @@ Promise that resolves after first emit from observable
 
 > **hasEmitted**: `boolean`
 
-Defined in: [src/useObservable.ts:47](https://github.com/FirebaseExtended/reactfire/blob/main/src/useObservable.ts#L47)
+Defined in: [src/useObservable.ts:61](https://github.com/FirebaseExtended/reactfire/blob/main/src/useObservable.ts#L61)
 
 Indicates whether the hook has emitted a value at some point
 
@@ -64,7 +64,7 @@ If `initialData` is passed in, this will be `true`.
 
 > **isComplete**: `boolean`
 
-Defined in: [src/useObservable.ts:51](https://github.com/FirebaseExtended/reactfire/blob/main/src/useObservable.ts#L51)
+Defined in: [src/useObservable.ts:65](https://github.com/FirebaseExtended/reactfire/blob/main/src/useObservable.ts#L65)
 
 If this is `true`, the hook will be emitting no further items.
 
@@ -74,7 +74,7 @@ If this is `true`, the hook will be emitting no further items.
 
 > **status**: `"error"` \| `"loading"` \| `"success"`
 
-Defined in: [src/useObservable.ts:41](https://github.com/FirebaseExtended/reactfire/blob/main/src/useObservable.ts#L41)
+Defined in: [src/useObservable.ts:55](https://github.com/FirebaseExtended/reactfire/blob/main/src/useObservable.ts#L55)
 
 The loading status.
 
diff --git a/docs/reference/interfaces/ReactFireOptions.md b/docs/reference/interfaces/ReactFireOptions.md
index 7ca63c5e..80f7f756 100644
--- a/docs/reference/interfaces/ReactFireOptions.md
+++ b/docs/reference/interfaces/ReactFireOptions.md
@@ -6,7 +6,7 @@
 
 # Interface: ReactFireOptions\<T\>
 
-Defined in: [src/index.ts:24](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L24)
+Defined in: [src/index.ts:25](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L25)
 
 ## Extended by
 
@@ -24,7 +24,7 @@ Defined in: [src/index.ts:24](https://github.com/FirebaseExtended/reactfire/blob
 
 > `optional` **idField?**: `string`
 
-Defined in: [src/index.ts:25](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L25)
+Defined in: [src/index.ts:26](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L26)
 
 ***
 
@@ -32,7 +32,7 @@ Defined in: [src/index.ts:25](https://github.com/FirebaseExtended/reactfire/blob
 
 > `optional` **initialData?**: `any`
 
-Defined in: [src/index.ts:26](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L26)
+Defined in: [src/index.ts:27](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L27)
 
 ***
 
@@ -40,7 +40,7 @@ Defined in: [src/index.ts:26](https://github.com/FirebaseExtended/reactfire/blob
 
 > `optional` **startWithValue?**: `any`
 
-Defined in: [src/index.ts:30](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L30)
+Defined in: [src/index.ts:31](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L31)
 
 #### Deprecated
 
@@ -52,4 +52,4 @@ use initialData instead
 
 > `optional` **suspense?**: `boolean`
 
-Defined in: [src/index.ts:31](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L31)
+Defined in: [src/index.ts:32](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L32)
diff --git a/docs/reference/interfaces/SignInCheckOptionsBasic.md b/docs/reference/interfaces/SignInCheckOptionsBasic.md
index 66967bf8..7f6ba493 100644
--- a/docs/reference/interfaces/SignInCheckOptionsBasic.md
+++ b/docs/reference/interfaces/SignInCheckOptionsBasic.md
@@ -31,7 +31,7 @@ Defined in: [src/auth.tsx:86](https://github.com/FirebaseExtended/reactfire/blob
 
 > `optional` **idField?**: `string`
 
-Defined in: [src/index.ts:25](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L25)
+Defined in: [src/index.ts:26](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L26)
 
 #### Inherited from
 
@@ -43,7 +43,7 @@ Defined in: [src/index.ts:25](https://github.com/FirebaseExtended/reactfire/blob
 
 > `optional` **initialData?**: `any`
 
-Defined in: [src/index.ts:26](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L26)
+Defined in: [src/index.ts:27](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L27)
 
 #### Inherited from
 
@@ -55,7 +55,7 @@ Defined in: [src/index.ts:26](https://github.com/FirebaseExtended/reactfire/blob
 
 > `optional` **startWithValue?**: `any`
 
-Defined in: [src/index.ts:30](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L30)
+Defined in: [src/index.ts:31](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L31)
 
 #### Deprecated
 
@@ -71,7 +71,7 @@ use initialData instead
 
 > `optional` **suspense?**: `boolean`
 
-Defined in: [src/index.ts:31](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L31)
+Defined in: [src/index.ts:32](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L32)
 
 #### Inherited from
 
diff --git a/docs/reference/interfaces/SignInCheckOptionsClaimsObject.md b/docs/reference/interfaces/SignInCheckOptionsClaimsObject.md
index 09a1eae0..36823a00 100644
--- a/docs/reference/interfaces/SignInCheckOptionsClaimsObject.md
+++ b/docs/reference/interfaces/SignInCheckOptionsClaimsObject.md
@@ -30,7 +30,7 @@ Defined in: [src/auth.tsx:86](https://github.com/FirebaseExtended/reactfire/blob
 
 > `optional` **idField?**: `string`
 
-Defined in: [src/index.ts:25](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L25)
+Defined in: [src/index.ts:26](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L26)
 
 #### Inherited from
 
@@ -42,7 +42,7 @@ Defined in: [src/index.ts:25](https://github.com/FirebaseExtended/reactfire/blob
 
 > `optional` **initialData?**: `any`
 
-Defined in: [src/index.ts:26](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L26)
+Defined in: [src/index.ts:27](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L27)
 
 #### Inherited from
 
@@ -62,7 +62,7 @@ Defined in: [src/auth.tsx:90](https://github.com/FirebaseExtended/reactfire/blob
 
 > `optional` **startWithValue?**: `any`
 
-Defined in: [src/index.ts:30](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L30)
+Defined in: [src/index.ts:31](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L31)
 
 #### Deprecated
 
@@ -78,7 +78,7 @@ use initialData instead
 
 > `optional` **suspense?**: `boolean`
 
-Defined in: [src/index.ts:31](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L31)
+Defined in: [src/index.ts:32](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L32)
 
 #### Inherited from
 
diff --git a/docs/reference/interfaces/SignInCheckOptionsClaimsValidator.md b/docs/reference/interfaces/SignInCheckOptionsClaimsValidator.md
index 5ba7f609..5047d54d 100644
--- a/docs/reference/interfaces/SignInCheckOptionsClaimsValidator.md
+++ b/docs/reference/interfaces/SignInCheckOptionsClaimsValidator.md
@@ -30,7 +30,7 @@ Defined in: [src/auth.tsx:86](https://github.com/FirebaseExtended/reactfire/blob
 
 > `optional` **idField?**: `string`
 
-Defined in: [src/index.ts:25](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L25)
+Defined in: [src/index.ts:26](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L26)
 
 #### Inherited from
 
@@ -42,7 +42,7 @@ Defined in: [src/index.ts:25](https://github.com/FirebaseExtended/reactfire/blob
 
 > `optional` **initialData?**: `any`
 
-Defined in: [src/index.ts:26](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L26)
+Defined in: [src/index.ts:27](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L27)
 
 #### Inherited from
 
@@ -54,7 +54,7 @@ Defined in: [src/index.ts:26](https://github.com/FirebaseExtended/reactfire/blob
 
 > `optional` **startWithValue?**: `any`
 
-Defined in: [src/index.ts:30](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L30)
+Defined in: [src/index.ts:31](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L31)
 
 #### Deprecated
 
@@ -70,7 +70,7 @@ use initialData instead
 
 > `optional` **suspense?**: `boolean`
 
-Defined in: [src/index.ts:31](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L31)
+Defined in: [src/index.ts:32](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L32)
 
 #### Inherited from
 
diff --git a/docs/reference/type-aliases/ReactFireGlobals.md b/docs/reference/type-aliases/ReactFireGlobals.md
index 995ef49a..5fad317b 100644
--- a/docs/reference/type-aliases/ReactFireGlobals.md
+++ b/docs/reference/type-aliases/ReactFireGlobals.md
@@ -28,6 +28,14 @@ Defined in: [src/index.ts:8](https://github.com/FirebaseExtended/reactfire/blob/
 
 ***
 
+### \_reactFireInitializedSdks
+
+> **\_reactFireInitializedSdks**: `WeakMap`\<`object`, `Map`\<`string`, `Promise`\<`unknown`\>\>\>
+
+Defined in: [src/index.ts:10](https://github.com/FirebaseExtended/reactfire/blob/main/src/index.ts#L10)
+
+***
+
 ### \_reactFirePreloadedObservables
 
 > **\_reactFirePreloadedObservables**: `Map`\<`string`, `SuspenseSubject`\<`any`\>\>
diff --git a/docs/reference/variables/AnalyticsProvider.md b/docs/reference/variables/AnalyticsProvider.md
index 67edf246..e09d1387 100644
--- a/docs/reference/variables/AnalyticsProvider.md
+++ b/docs/reference/variables/AnalyticsProvider.md
@@ -8,7 +8,7 @@
 
 > `const` **AnalyticsProvider**: (`props`) => `ReactElement`
 
-Defined in: [src/sdk.tsx:74](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L74)
+Defined in: [src/sdk.tsx:100](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L100)
 
 ## Parameters
 
diff --git a/docs/reference/variables/AnalyticsSdkContext.md b/docs/reference/variables/AnalyticsSdkContext.md
index 8d51b3f9..a60edb38 100644
--- a/docs/reference/variables/AnalyticsSdkContext.md
+++ b/docs/reference/variables/AnalyticsSdkContext.md
@@ -8,4 +8,4 @@
 
 > `const` **AnalyticsSdkContext**: `Context`\<`Analytics` \| `undefined`\>
 
-Defined in: [src/sdk.tsx:20](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L20)
+Defined in: [src/sdk.tsx:26](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L26)
diff --git a/docs/reference/variables/AppCheckProvider.md b/docs/reference/variables/AppCheckProvider.md
index ff42596a..74707d15 100644
--- a/docs/reference/variables/AppCheckProvider.md
+++ b/docs/reference/variables/AppCheckProvider.md
@@ -8,7 +8,7 @@
 
 > `const` **AppCheckProvider**: (`props`) => `ReactElement`
 
-Defined in: [src/sdk.tsx:72](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L72)
+Defined in: [src/sdk.tsx:98](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L98)
 
 ## Parameters
 
diff --git a/docs/reference/variables/AppCheckSdkContext.md b/docs/reference/variables/AppCheckSdkContext.md
index 311519af..1c2ec00a 100644
--- a/docs/reference/variables/AppCheckSdkContext.md
+++ b/docs/reference/variables/AppCheckSdkContext.md
@@ -8,4 +8,4 @@
 
 > `const` **AppCheckSdkContext**: `Context`\<`AppCheck` \| `undefined`\>
 
-Defined in: [src/sdk.tsx:18](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L18)
+Defined in: [src/sdk.tsx:24](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L24)
diff --git a/docs/reference/variables/AuthProvider.md b/docs/reference/variables/AuthProvider.md
index 11ea5392..9139dac8 100644
--- a/docs/reference/variables/AuthProvider.md
+++ b/docs/reference/variables/AuthProvider.md
@@ -8,7 +8,7 @@
 
 > `const` **AuthProvider**: (`props`) => `ReactElement`
 
-Defined in: [src/sdk.tsx:73](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L73)
+Defined in: [src/sdk.tsx:99](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L99)
 
 ## Parameters
 
diff --git a/docs/reference/variables/AuthSdkContext.md b/docs/reference/variables/AuthSdkContext.md
index 22b522cb..d80f8fc8 100644
--- a/docs/reference/variables/AuthSdkContext.md
+++ b/docs/reference/variables/AuthSdkContext.md
@@ -8,4 +8,4 @@
 
 > `const` **AuthSdkContext**: `Context`\<`Auth` \| `undefined`\>
 
-Defined in: [src/sdk.tsx:19](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L19)
+Defined in: [src/sdk.tsx:25](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L25)
diff --git a/docs/reference/variables/DatabaseProvider.md b/docs/reference/variables/DatabaseProvider.md
index e8069948..367f9233 100644
--- a/docs/reference/variables/DatabaseProvider.md
+++ b/docs/reference/variables/DatabaseProvider.md
@@ -8,7 +8,7 @@
 
 > `const` **DatabaseProvider**: (`props`) => `ReactElement`
 
-Defined in: [src/sdk.tsx:75](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L75)
+Defined in: [src/sdk.tsx:101](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L101)
 
 ## Parameters
 
diff --git a/docs/reference/variables/DatabaseSdkContext.md b/docs/reference/variables/DatabaseSdkContext.md
index 09acae02..69ddd97b 100644
--- a/docs/reference/variables/DatabaseSdkContext.md
+++ b/docs/reference/variables/DatabaseSdkContext.md
@@ -8,4 +8,4 @@
 
 > `const` **DatabaseSdkContext**: `Context`\<`Database` \| `undefined`\>
 
-Defined in: [src/sdk.tsx:21](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L21)
+Defined in: [src/sdk.tsx:27](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L27)
diff --git a/docs/reference/variables/FirestoreProvider.md b/docs/reference/variables/FirestoreProvider.md
index d689f31f..036b800f 100644
--- a/docs/reference/variables/FirestoreProvider.md
+++ b/docs/reference/variables/FirestoreProvider.md
@@ -8,7 +8,7 @@
 
 > `const` **FirestoreProvider**: (`props`) => `ReactElement`
 
-Defined in: [src/sdk.tsx:76](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L76)
+Defined in: [src/sdk.tsx:102](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L102)
 
 ## Parameters
 
diff --git a/docs/reference/variables/FirestoreSdkContext.md b/docs/reference/variables/FirestoreSdkContext.md
index 0fcb9ea2..53a9c5a9 100644
--- a/docs/reference/variables/FirestoreSdkContext.md
+++ b/docs/reference/variables/FirestoreSdkContext.md
@@ -8,4 +8,4 @@
 
 > `const` **FirestoreSdkContext**: `Context`\<`Firestore` \| `undefined`\>
 
-Defined in: [src/sdk.tsx:22](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L22)
+Defined in: [src/sdk.tsx:28](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L28)
diff --git a/docs/reference/variables/FunctionsProvider.md b/docs/reference/variables/FunctionsProvider.md
index 918b2609..fc32521c 100644
--- a/docs/reference/variables/FunctionsProvider.md
+++ b/docs/reference/variables/FunctionsProvider.md
@@ -8,7 +8,7 @@
 
 > `const` **FunctionsProvider**: (`props`) => `ReactElement`
 
-Defined in: [src/sdk.tsx:77](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L77)
+Defined in: [src/sdk.tsx:103](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L103)
 
 ## Parameters
 
diff --git a/docs/reference/variables/FunctionsSdkContext.md b/docs/reference/variables/FunctionsSdkContext.md
index fe59787f..188e7f75 100644
--- a/docs/reference/variables/FunctionsSdkContext.md
+++ b/docs/reference/variables/FunctionsSdkContext.md
@@ -8,4 +8,4 @@
 
 > `const` **FunctionsSdkContext**: `Context`\<`Functions` \| `undefined`\>
 
-Defined in: [src/sdk.tsx:23](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L23)
+Defined in: [src/sdk.tsx:29](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L29)
diff --git a/docs/reference/variables/PerformanceProvider.md b/docs/reference/variables/PerformanceProvider.md
index ee2fcc28..71f58d57 100644
--- a/docs/reference/variables/PerformanceProvider.md
+++ b/docs/reference/variables/PerformanceProvider.md
@@ -8,7 +8,7 @@
 
 > `const` **PerformanceProvider**: (`props`) => `ReactElement`
 
-Defined in: [src/sdk.tsx:78](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L78)
+Defined in: [src/sdk.tsx:104](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L104)
 
 ## Parameters
 
diff --git a/docs/reference/variables/PerformanceSdkContext.md b/docs/reference/variables/PerformanceSdkContext.md
index cff32f29..1ffe7af6 100644
--- a/docs/reference/variables/PerformanceSdkContext.md
+++ b/docs/reference/variables/PerformanceSdkContext.md
@@ -8,4 +8,4 @@
 
 > `const` **PerformanceSdkContext**: `Context`\<`FirebasePerformance` \| `undefined`\>
 
-Defined in: [src/sdk.tsx:25](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L25)
+Defined in: [src/sdk.tsx:31](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L31)
diff --git a/docs/reference/variables/RemoteConfigProvider.md b/docs/reference/variables/RemoteConfigProvider.md
index 8d3d3625..6b7f30f0 100644
--- a/docs/reference/variables/RemoteConfigProvider.md
+++ b/docs/reference/variables/RemoteConfigProvider.md
@@ -8,7 +8,7 @@
 
 > `const` **RemoteConfigProvider**: (`props`) => `ReactElement`
 
-Defined in: [src/sdk.tsx:80](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L80)
+Defined in: [src/sdk.tsx:106](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L106)
 
 ## Parameters
 
diff --git a/docs/reference/variables/RemoteConfigSdkContext.md b/docs/reference/variables/RemoteConfigSdkContext.md
index 00fbb0f7..ebfe166a 100644
--- a/docs/reference/variables/RemoteConfigSdkContext.md
+++ b/docs/reference/variables/RemoteConfigSdkContext.md
@@ -8,4 +8,4 @@
 
 > `const` **RemoteConfigSdkContext**: `Context`\<`RemoteConfig` \| `undefined`\>
 
-Defined in: [src/sdk.tsx:26](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L26)
+Defined in: [src/sdk.tsx:32](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L32)
diff --git a/docs/reference/variables/StorageProvider.md b/docs/reference/variables/StorageProvider.md
index dbcb81c1..78800875 100644
--- a/docs/reference/variables/StorageProvider.md
+++ b/docs/reference/variables/StorageProvider.md
@@ -8,7 +8,7 @@
 
 > `const` **StorageProvider**: (`props`) => `ReactElement`
 
-Defined in: [src/sdk.tsx:79](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L79)
+Defined in: [src/sdk.tsx:105](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L105)
 
 ## Parameters
 
diff --git a/docs/reference/variables/StorageSdkContext.md b/docs/reference/variables/StorageSdkContext.md
index e921e113..daa4f7f7 100644
--- a/docs/reference/variables/StorageSdkContext.md
+++ b/docs/reference/variables/StorageSdkContext.md
@@ -8,4 +8,4 @@
 
 > `const` **StorageSdkContext**: `Context`\<`FirebaseStorage` \| `undefined`\>
 
-Defined in: [src/sdk.tsx:24](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L24)
+Defined in: [src/sdk.tsx:30](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L30)
diff --git a/docs/reference/variables/useInitAnalytics.md b/docs/reference/variables/useInitAnalytics.md
index 80cddfb2..5172100b 100644
--- a/docs/reference/variables/useInitAnalytics.md
+++ b/docs/reference/variables/useInitAnalytics.md
@@ -8,4 +8,4 @@
 
 > `const` **useInitAnalytics**: `InitSdkHook`\<`Analytics`\>
 
-Defined in: [src/sdk.tsx:99](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L99)
+Defined in: [src/sdk.tsx:125](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L125)
diff --git a/docs/reference/variables/useInitAppCheck.md b/docs/reference/variables/useInitAppCheck.md
index 810fc3f0..433e62c8 100644
--- a/docs/reference/variables/useInitAppCheck.md
+++ b/docs/reference/variables/useInitAppCheck.md
@@ -8,4 +8,4 @@
 
 > `const` **useInitAppCheck**: `InitSdkHook`\<`AppCheck`\>
 
-Defined in: [src/sdk.tsx:97](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L97)
+Defined in: [src/sdk.tsx:123](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L123)
diff --git a/docs/reference/variables/useInitAuth.md b/docs/reference/variables/useInitAuth.md
index bd29275b..2e209c6a 100644
--- a/docs/reference/variables/useInitAuth.md
+++ b/docs/reference/variables/useInitAuth.md
@@ -8,4 +8,4 @@
 
 > `const` **useInitAuth**: `InitSdkHook`\<`Auth`\>
 
-Defined in: [src/sdk.tsx:98](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L98)
+Defined in: [src/sdk.tsx:124](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L124)
diff --git a/docs/reference/variables/useInitDatabase.md b/docs/reference/variables/useInitDatabase.md
index 4bb0de18..1bfb954d 100644
--- a/docs/reference/variables/useInitDatabase.md
+++ b/docs/reference/variables/useInitDatabase.md
@@ -8,4 +8,4 @@
 
 > `const` **useInitDatabase**: `InitSdkHook`\<`Database`\>
 
-Defined in: [src/sdk.tsx:100](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L100)
+Defined in: [src/sdk.tsx:126](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L126)
diff --git a/docs/reference/variables/useInitFirestore.md b/docs/reference/variables/useInitFirestore.md
index 5ef24c7e..901ee772 100644
--- a/docs/reference/variables/useInitFirestore.md
+++ b/docs/reference/variables/useInitFirestore.md
@@ -8,4 +8,4 @@
 
 > `const` **useInitFirestore**: `InitSdkHook`\<`Firestore`\>
 
-Defined in: [src/sdk.tsx:101](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L101)
+Defined in: [src/sdk.tsx:127](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L127)
diff --git a/docs/reference/variables/useInitFunctions.md b/docs/reference/variables/useInitFunctions.md
index 63c7eed4..fa127eb3 100644
--- a/docs/reference/variables/useInitFunctions.md
+++ b/docs/reference/variables/useInitFunctions.md
@@ -8,4 +8,4 @@
 
 > `const` **useInitFunctions**: `InitSdkHook`\<`Functions`\>
 
-Defined in: [src/sdk.tsx:102](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L102)
+Defined in: [src/sdk.tsx:128](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L128)
diff --git a/docs/reference/variables/useInitPerformance.md b/docs/reference/variables/useInitPerformance.md
index 150cdfdd..99c0cf6a 100644
--- a/docs/reference/variables/useInitPerformance.md
+++ b/docs/reference/variables/useInitPerformance.md
@@ -8,4 +8,4 @@
 
 > `const` **useInitPerformance**: `InitSdkHook`\<`FirebasePerformance`\>
 
-Defined in: [src/sdk.tsx:103](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L103)
+Defined in: [src/sdk.tsx:129](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L129)
diff --git a/docs/reference/variables/useInitRemoteConfig.md b/docs/reference/variables/useInitRemoteConfig.md
index f9871886..80961afd 100644
--- a/docs/reference/variables/useInitRemoteConfig.md
+++ b/docs/reference/variables/useInitRemoteConfig.md
@@ -8,4 +8,4 @@
 
 > `const` **useInitRemoteConfig**: `InitSdkHook`\<`RemoteConfig`\>
 
-Defined in: [src/sdk.tsx:105](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L105)
+Defined in: [src/sdk.tsx:131](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L131)
diff --git a/docs/reference/variables/useInitStorage.md b/docs/reference/variables/useInitStorage.md
index a38823da..4dc80cb1 100644
--- a/docs/reference/variables/useInitStorage.md
+++ b/docs/reference/variables/useInitStorage.md
@@ -8,4 +8,4 @@
 
 > `const` **useInitStorage**: `InitSdkHook`\<`FirebaseStorage`\>
 
-Defined in: [src/sdk.tsx:107](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L107)
+Defined in: [src/sdk.tsx:133](https://github.com/FirebaseExtended/reactfire/blob/main/src/sdk.tsx#L133)
diff --git a/src/SuspenseSubject.ts b/src/SuspenseSubject.ts
index 5b7ef884..4514a586 100644
--- a/src/SuspenseSubject.ts
+++ b/src/SuspenseSubject.ts
@@ -1,24 +1,35 @@
-import { empty, Observable, Subject, Subscriber, Subscription } from 'rxjs';
-import { catchError, shareReplay, tap } from 'rxjs/operators';
+import { EMPTY, from, Observable, of, ReplaySubject, Subject, Subscriber, Subscription, timer } from 'rxjs';
+import { catchError, delay, mergeMap, share, tap } from 'rxjs/operators';
 import { ObservableStatus } from './useObservable.js';
 
+// Grace period before a zero-subscriber stream detaches its Firebase listener and evicts its cache entry.
+// A 1-second window lets React StrictMode double-mounts and immediate route transitions reuse the active listener.
+const LISTENER_RELEASE_DELAY_MS = 1000;
+
+// How long a first-load error stays cached in non-suspense mode, so the render that hit it can throw it to a boundary.
+const FIRST_LOAD_ERROR_EVICT_DELAY_MS = 1000;
+
 export class SuspenseSubject<T> extends Subject<T> {
   private _value: T | undefined;
   private _hasValue = false;
-  private _timeoutHandler: ReturnType<typeof setTimeout>;
+  private _warmupRelease: Subscription;
   private _firstEmission: Promise<void>;
   private _error: any = undefined;
   private _innerObservable: Observable<T>;
   private _warmupSubscription: Subscription;
   private _immutableStatus: ObservableStatus<T>;
   private _isComplete = false;
+  private _subscriberCount = 0;
 
-  // @ts-expect-error: TODO: double check to see if this is an RXJS thing or if we should listen to TS
-  private _innerSubscriber: Subscription;
-  // @ts-expect-error: TODO: double check to see if this is an RXJS thing or if we should listen to TS
-  private _resolveFirstEmission: () => void;
+  private _resolveFirstEmission!: () => void;
 
-  constructor(innerObservable: Observable<T>, private _timeoutWindow: number, private _suspenseEnabled: boolean) {
+  constructor(
+    innerObservable: Observable<T>,
+    private _timeoutWindow: number,
+    private _suspenseEnabled: boolean,
+    private _onEvict: () => void,
+    private _onReregister: () => void
+  ) {
     super();
     this._firstEmission = new Promise<void>((resolve) => (this._resolveFirstEmission = resolve));
 
@@ -31,37 +42,69 @@ export class SuspenseSubject<T> extends Subject<T> {
       firstValuePromise: this._firstEmission
     } as ObservableStatus<T>;
 
-    this._innerObservable = innerObservable.pipe(
+    // `from` re-wraps an Observable from another rxjs copy (rxjs 6 apps) so unsubscribe reaches the source.
+    this._innerObservable = from(innerObservable).pipe(
       tap({
-        next: (v) => {
-          this._next(v);
+        next: (value) => {
+          this._next(value);
         },
-        error: (e) => {
+        error: (error) => {
           // save the error, so that we can raise on subscription or .value
           // resolve the promise, so suspense tries again
-          this._error = e;
+          this._error = error;
           this._resolveFirstEmission();
           this._updateImmutableStatus();
+          // #485: nobody is left to read the error, so evict now.
+          // #742: non-suspense evicts after a delay so the next mount retries; Suspense keeps it, since React may retry a suspended render after any delay.
+          if (this._subscriberCount === 0 && this._warmupSubscription?.closed) {
+            this._onEvict();
+          } else if (!this._suspenseEnabled) {
+            // Re-check when the timer fires: a Suspense hook may read this entry after the error arrives.
+            setTimeout(() => {
+              if (!this._suspenseEnabled) {
+                this._onEvict();
+              }
+            }, FIRST_LOAD_ERROR_EVICT_DELAY_MS);
+          }
         },
         complete: () => {
           this._isComplete = true;
           this._updateImmutableStatus();
         }
       }),
-      catchError(() => empty()),
-      shareReplay(1)
+      catchError(() => EMPTY),
+      // `resetOnComplete: false` keeps a completed one-shot (`*Once`) value cached; resetting would make a mounted component re-fetch.
+      share({
+        connector: () => new ReplaySubject<T>(1),
+        resetOnComplete: false,
+        resetOnRefCountZero: () =>
+          timer(LISTENER_RELEASE_DELAY_MS).pipe(
+            // A suspended render holds no subscription, so never tear down before the first emission settles,
+            // then give that render one more grace period to subscribe.
+            mergeMap(() => (this._hasValue || this._error ? of(undefined) : from(this._firstEmission).pipe(delay(LISTENER_RELEASE_DELAY_MS)))),
+            tap(this._onEvict)
+          ),
+      })
     );
     // warm up the observable
     this._warmupSubscription = this._innerObservable.subscribe();
 
-    // set a timeout for resetting the cache, subscriptions will cancel the timeout
-    // and reschedule again on unsubscribe
-    if (this._suspenseEnabled) {
-      // Noop if suspense is enabled
-      this._timeoutHandler = setTimeout(() => {}, this._timeoutWindow);
-    } else {
-      this._timeoutHandler = setTimeout(this._reset.bind(this), this._timeoutWindow);
-    }
+    // Release the warm-up `_timeoutWindow` after the first emission, giving a suspended component time to subscribe (#525).
+    // A stream that completed during warm-up skips `resetOnRefCountZero`, so evict it here (#790).
+    this._warmupRelease = from(this._firstEmission)
+      .pipe(delay(this._timeoutWindow))
+      .subscribe(() => {
+        this._warmupSubscription.unsubscribe();
+        if (this._isComplete) {
+          this._onEvict();
+        }
+      });
+  }
+
+  // An entry created with Suspense off (by a preload helper, which cannot read the Suspense context)
+  // switches to the Suspense error policy once a Suspense hook reads it. It never switches back.
+  enableSuspense() {
+    this._suspenseEnabled = true;
   }
 
   get hasValue(): boolean {
@@ -72,9 +115,6 @@ export class SuspenseSubject<T> extends Subject<T> {
   }
 
   get value(): T {
-    // TODO figure out how to reset the cache here, if I _reset() here before throwing
-    // it doesn't seem to work.
-    // As it is now, this will burn the cache entry until the timeout fires.
     if (this._error) {
       throw this._error;
     } else if (!this.hasValue) {
@@ -88,9 +128,7 @@ export class SuspenseSubject<T> extends Subject<T> {
   }
 
   private _updateImmutableStatus() {
-    // Cast required because `data` is internally `T | undefined` while a value is
-    // still in flight, whereas ObservableStatus exposes `data: T` to consumers.
-    // The relationships between the status fields are verified in tests instead.
+    // `data` is `T | undefined` until the first value; ObservableStatus exposes `T`.
     this._immutableStatus = {
       status: this._error ? 'error' : (this._hasValue ? 'success' : 'loading'),
       hasEmitted: this._hasValue,
@@ -108,24 +146,35 @@ export class SuspenseSubject<T> extends Subject<T> {
     this._updateImmutableStatus();
   }
 
-  private _reset() {
-    // seems to be undefined in tests?
-    if (this._warmupSubscription) {
-      this._warmupSubscription.unsubscribe();
-    }
-    this._hasValue = false;
-    this._value = undefined;
-    this._error = undefined;
-    this._firstEmission = new Promise<void>((resolve) => (this._resolveFirstEmission = resolve));
-    this._updateImmutableStatus();
-  }
-
   _subscribe(subscriber: Subscriber<T>): Subscription {
-    if (this._timeoutHandler) {
-      clearTimeout(this._timeoutHandler);
+    // A mounted subscriber owns the source now; the warm-up release would evict a mounted one-shot entry.
+    this._warmupRelease.unsubscribe();
+    if (!this._error && !this._isComplete) {
+      this._onReregister();
     }
-    this._innerSubscriber = this._innerObservable.subscribe(subscriber);
-    return this._innerSubscriber;
+    this._subscriberCount++;
+    const innerSubscription = this._innerObservable.subscribe({
+      next: (value) => subscriber.next(value),
+      complete: () => {
+        if (this._error) {
+          // `catchError(() => EMPTY)` converts upstream errors into completions.
+          // Notify `useObservable` (`onStoreChange`) without calling `subscriber.complete()`,
+          // because `subscriber.complete()` auto-unsubscribes `subscriber` before React unmounts.
+          subscriber.next(this._value);
+        } else {
+          subscriber.complete();
+        }
+      },
+    });
+    // Hand off ownership of the shared source from the warm-up subscription to the real subscriber.
+    this._warmupSubscription.unsubscribe();
+    return new Subscription(() => {
+      innerSubscription.unsubscribe();
+      this._subscriberCount--;
+      if (this._subscriberCount === 0 && this._error) {
+        this._onEvict();
+      }
+    });
   }
 
   get ourError() {
diff --git a/src/index.ts b/src/index.ts
index 028a4a62..2dda8cae 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -7,6 +7,7 @@ export type ReactFireGlobals = {
   _reactFireDatabaseCachedQueries: Array<DatabaseQuery>;
   _reactFireFirestoreQueryCache: Array<FirestoreQuery>;
   _reactFirePreloadedObservables: Map<string, SuspenseSubject<any>>;
+  _reactFireInitializedSdks: WeakMap<object, Map<string, Promise<unknown>>>;
 };
 
 export class ReactFireError extends Error {
diff --git a/src/sdk.tsx b/src/sdk.tsx
index c3238604..b4ee5470 100644
--- a/src/sdk.tsx
+++ b/src/sdk.tsx
@@ -13,7 +13,13 @@ import { useFirebaseApp } from './firebaseApp.js';
 import { FirebaseApp } from 'firebase/app';
 import { ObservableStatus, useObservable } from './useObservable.js';
 import { from } from 'rxjs';
-import { ReactFireOptions } from './index.js';
+import { ReactFireGlobals, ReactFireOptions } from './index.js';
+
+// Initializers run once per app and SDK, independent of the observable cache, which can evict a completed entry.
+const initializedSdks: WeakMap<object, Map<string, Promise<unknown>>> = (globalThis as any as ReactFireGlobals)._reactFireInitializedSdks || new WeakMap();
+if (!(globalThis as any as ReactFireGlobals)._reactFireInitializedSdks) {
+  (globalThis as any as ReactFireGlobals)._reactFireInitializedSdks = initializedSdks;
+}
 
 export const AppCheckSdkContext = React.createContext<AppCheck | undefined>(undefined);
 export const AuthSdkContext = React.createContext<Auth | undefined>(undefined);
@@ -64,7 +70,27 @@ function useInitSdk<Sdk extends FirebaseSdks>(
     throw new Error(`Cannot initialize SDK ${sdkName} because it already exists in Context`);
   }
 
-  const initializeSdk = React.useMemo(() => sdkInitializer(firebaseApp), [firebaseApp]);
+  const initializeSdk = React.useMemo(() => {
+    let sdks = initializedSdks.get(firebaseApp);
+    if (!sdks) {
+      sdks = new Map();
+      initializedSdks.set(firebaseApp, sdks);
+    }
+    if (!sdks.has(sdkName)) {
+      const cache = sdks;
+      const initializing = sdkInitializer(firebaseApp);
+      // A rejected initializer must not stay cached, or no later mount can retry it.
+      initializing.catch(() => {
+        if (cache.get(sdkName) === initializing) {
+          cache.delete(sdkName);
+        }
+      });
+      cache.set(sdkName, initializing);
+    }
+    return sdks.get(sdkName) as Promise<Sdk>;
+    // Cached per app and SDK name, so a new `sdkInitializer` identity on re-render must not re-run it.
+    // oxlint-disable-next-line react/exhaustive-deps
+  }, [firebaseApp]);
 
   return useObservable<Sdk>(`firebase-sdk:${sdkName}:${firebaseApp.name}`, from(initializeSdk), options);
 }
diff --git a/src/useObservable.ts b/src/useObservable.ts
index 3d055c4a..42575419 100644
--- a/src/useObservable.ts
+++ b/src/useObservable.ts
@@ -20,9 +20,23 @@ if (!(globalThis as any as ReactFireGlobals)._reactFirePreloadedObservables) {
 // child that will consume the observable
 export function preloadObservable<T>(source: Observable<T>, id: string, suspenseEnabled = false) {
   if (preloadedObservables.has(id)) {
-    return preloadedObservables.get(id) as SuspenseSubject<T>;
+    const existing = preloadedObservables.get(id) as SuspenseSubject<T>;
+    if (suspenseEnabled) {
+      existing.enableSuspense();
+    }
+    return existing;
   } else {
-    const observable = new SuspenseSubject(source, DEFAULT_TIMEOUT, suspenseEnabled);
+    const observable: SuspenseSubject<T> = new SuspenseSubject(
+      source,
+      DEFAULT_TIMEOUT,
+      suspenseEnabled,
+      () => preloadedObservables.get(id) === observable && preloadedObservables.delete(id),
+      () => {
+        if (!preloadedObservables.has(id)) {
+          preloadedObservables.set(id, observable);
+        }
+      }
+    );
     preloadedObservables.set(id, observable);
     return observable;
   }
diff --git a/test/preload-suspense-policy.test.tsx b/test/preload-suspense-policy.test.tsx
new file mode 100644
index 00000000..79cf43c1
--- /dev/null
+++ b/test/preload-suspense-policy.test.tsx
@@ -0,0 +1,68 @@
+import '@testing-library/jest-dom/extend-expect';
+import { cleanup, render, waitFor } from '@testing-library/react';
+import * as React from 'react';
+import { Observable, timer, throwError } from 'rxjs';
+import { mergeMap } from 'rxjs/operators';
+import { preloadObservable, useObservable } from '../src/index';
+
+// A preload helper cannot read the Suspense context, so it creates its entry with Suspense off.
+// Once a Suspense-mode hook reads that entry, a first-load error must stay cached like a hook-created
+// entry's: evicting it lets a later Suspense read suspend and refetch instead of reaching the boundary.
+describe('preload-created entry read by a Suspense hook', () => {
+  afterEach(() => cleanup());
+
+  class Boundary extends React.Component<{ children: React.ReactNode }, { error: Error | null }> {
+    state: { error: Error | null } = { error: null };
+    static getDerivedStateFromError(error: Error) {
+      return { error };
+    }
+    render() {
+      return this.state.error ? <div data-testid="err">{this.state.error.message}</div> : this.props.children;
+    }
+  }
+
+  // readDelay 0: the hook reads before the error arrives. 200: the error arrives first and the 1s timer is already running.
+  for (const readDelay of [0, 200]) {
+    it(`keeps a first-load error cached past the 1s eviction (Suspense read after ${readDelay}ms)`, async () => {
+      const consoleError = vi.spyOn(console, 'error').mockImplementation(() => {});
+      try {
+        let subscriptions = 0;
+        const source$ = new Observable<string>((subscriber) => {
+          subscriptions++;
+          return timer(50)
+            .pipe(mergeMap(() => throwError(() => new Error('permission-denied'))))
+            .subscribe(subscriber);
+        });
+        const observableId = `preload-suspense-${readDelay}-${Math.random()}`;
+
+        preloadObservable(source$, observableId);
+        await new Promise((resolve) => setTimeout(resolve, readDelay));
+
+        const Obs = () => {
+          const { data } = useObservable(observableId, source$, { suspense: true });
+          return <div data-testid="val">{data}</div>;
+        };
+        const tree = () => (
+          <Boundary>
+            <React.Suspense fallback={<div data-testid="fallback">loading</div>}>
+              <Obs />
+            </React.Suspense>
+          </Boundary>
+        );
+
+        const first = render(tree());
+        await waitFor(() => expect(first.getByTestId('err')).toHaveTextContent('permission-denied'));
+        first.unmount();
+
+        await new Promise((resolve) => setTimeout(resolve, 1300));
+
+        const second = render(tree());
+        expect(second.queryByTestId('fallback')).toBeNull();
+        expect(second.getByTestId('err')).toHaveTextContent('permission-denied');
+        expect(subscriptions).toBe(1);
+      } finally {
+        consoleError.mockRestore();
+      }
+    }, 10000);
+  }
+});
diff --git a/test/sdk-init-cache.test.tsx b/test/sdk-init-cache.test.tsx
new file mode 100644
index 00000000..fc402d96
--- /dev/null
+++ b/test/sdk-init-cache.test.tsx
@@ -0,0 +1,121 @@
+import '@testing-library/jest-dom/extend-expect';
+import { cleanup, render, waitFor } from '@testing-library/react';
+import { deleteApp, getApps, initializeApp } from 'firebase/app';
+import type { Firestore } from 'firebase/firestore';
+import * as React from 'react';
+import { FirebaseAppProvider, useInitFirestore } from '../src/index';
+import { baseConfig } from './appConfig';
+
+// SDK initializers have side effects that can only run once per app (Firestore persistence
+// rejects a second `initializeFirestore`). The initialized SDK must outlive the observable
+// cache entry, which the 30s warm-up release can evict while a Suspense boundary never commits.
+describe('useInit* initializer', () => {
+  afterEach(async () => {
+    cleanup();
+    await Promise.all(getApps().map((app) => deleteApp(app)));
+  });
+
+  class Boundary extends React.Component<{ children: React.ReactNode }, { error: Error | null }> {
+    state: { error: Error | null } = { error: null };
+    static getDerivedStateFromError(error: Error) {
+      return { error };
+    }
+    render() {
+      return this.state.error ? <div data-testid="err">{this.state.error.message}</div> : this.props.children;
+    }
+  }
+
+  it('does not run again after the warm-up release while a sibling keeps the boundary suspended', async () => {
+    const consoleError = vi.spyOn(console, 'error').mockImplementation(() => {});
+    try {
+      const app = initializeApp(baseConfig, `init-cache-${Math.random()}`);
+      let calls = 0;
+      const initializer = async () => {
+        calls++;
+        if (calls > 1) {
+          throw new Error('Firestore has already been started');
+        }
+        return { app } as unknown as Firestore;
+      };
+
+      const Init = () => {
+        useInitFirestore(initializer, { suspense: true });
+        return <div data-testid="ready">ready</div>;
+      };
+      const never = new Promise<void>(() => {});
+      const Forever = () => {
+        throw never;
+      };
+
+      const first = render(
+        <FirebaseAppProvider firebaseApp={app}>
+          <Boundary>
+            <React.Suspense fallback={<div data-testid="fallback">loading</div>}>
+              <Init />
+              <Forever />
+            </React.Suspense>
+          </Boundary>
+        </FirebaseAppProvider>
+      );
+      expect(first.getByTestId('fallback')).toBeInTheDocument();
+      // Past the 30s warm-up release; the boundary never committed, so nothing subscribed.
+      await new Promise((resolve) => setTimeout(resolve, 31_500));
+      first.unmount();
+
+      const second = render(
+        <FirebaseAppProvider firebaseApp={app}>
+          <Boundary>
+            <React.Suspense fallback={<div data-testid="fallback">loading</div>}>
+              <Init />
+            </React.Suspense>
+          </Boundary>
+        </FirebaseAppProvider>
+      );
+      await waitFor(() => expect(second.queryByTestId('ready') ?? second.queryByTestId('err')).not.toBeNull());
+      expect(second.queryByTestId('err')).toBeNull();
+      expect(second.getByTestId('ready')).toBeInTheDocument();
+      expect(calls).toBe(1);
+    } finally {
+      consoleError.mockRestore();
+    }
+  }, 45_000);
+
+  it('runs again on the next mount after the initializer rejects', async () => {
+    const consoleError = vi.spyOn(console, 'error').mockImplementation(() => {});
+    try {
+      const app = initializeApp(baseConfig, `init-retry-${Math.random()}`);
+      let calls = 0;
+      const initializer = async () => {
+        calls++;
+        if (calls === 1) {
+          throw new Error('network down');
+        }
+        return { app } as unknown as Firestore;
+      };
+
+      const Init = () => {
+        const { status } = useInitFirestore(initializer);
+        return status === 'success' ? <div data-testid="ready">ready</div> : null;
+      };
+      const tree = (
+        <FirebaseAppProvider firebaseApp={app}>
+          <Boundary>
+            <Init />
+          </Boundary>
+        </FirebaseAppProvider>
+      );
+
+      const first = render(tree);
+      await waitFor(() => expect(first.getByTestId('err')).toHaveTextContent('network down'));
+      first.unmount();
+      // Past the 1s error eviction, so the next mount builds a new cache entry.
+      await new Promise((resolve) => setTimeout(resolve, 1_500));
+
+      const second = render(tree);
+      await waitFor(() => expect(second.getByTestId('ready')).toBeInTheDocument());
+      expect(calls).toBe(2);
+    } finally {
+      consoleError.mockRestore();
+    }
+  }, 15_000);
+});
diff --git a/test/suspenseSubject-error-branch.test.tsx b/test/suspenseSubject-error-branch.test.tsx
new file mode 100644
index 00000000..1119c44f
--- /dev/null
+++ b/test/suspenseSubject-error-branch.test.tsx
@@ -0,0 +1,57 @@
+import '@testing-library/jest-dom/extend-expect';
+import { cleanup, render, waitFor } from '@testing-library/react';
+import * as React from 'react';
+import { Observable, timer, throwError } from 'rxjs';
+import { mergeMap } from 'rxjs/operators';
+import { useObservable } from '../src/index';
+
+// Guards the `if (this._error)` branch in SuspenseSubject._subscribe's `complete` handler.
+// `catchError(() => EMPTY)` turns a source error into a completion; that branch turns it back into
+// a notification instead of completing the React subscriber. Completing instead auto-unsubscribes
+// the mounted subscriber, and a mounted hook with `initialData` then resubscribes in a loop.
+describe('SuspenseSubject error-to-completion branch', () => {
+  afterEach(() => cleanup());
+
+  class Boundary extends React.Component<{ children: React.ReactNode }, { error: Error | null }> {
+    state: { error: Error | null } = { error: null };
+    static getDerivedStateFromError(error: Error) {
+      return { error };
+    }
+    render() {
+      return this.state.error ? <div data-testid="err">{this.state.error.message}</div> : this.props.children;
+    }
+  }
+
+  it('surfaces a source error to a mounted initialData hook once, without resubscribing', async () => {
+    const consoleError = vi.spyOn(console, 'error').mockImplementation(() => {});
+    try {
+      let subscriptions = 0;
+      const source$ = new Observable<string>((subscriber) => {
+        subscriptions++;
+        return timer(50)
+          .pipe(mergeMap(() => throwError(() => new Error('permission-denied'))))
+          .subscribe(subscriber);
+      });
+      const observableId = `error-branch-${Math.random()}`;
+
+      const Obs = () => {
+        const { data } = useObservable(observableId, source$, { initialData: 'seed' });
+        return <div data-testid="val">{data}</div>;
+      };
+
+      const { getByTestId } = render(
+        <Boundary>
+          <Obs />
+        </Boundary>
+      );
+      expect(getByTestId('val')).toHaveTextContent('seed');
+
+      await waitFor(() => expect(getByTestId('err')).toHaveTextContent('permission-denied'));
+      // Give a resubscribe loop time to show itself.
+      await new Promise((resolve) => setTimeout(resolve, 1500));
+      expect(subscriptions).toBe(1);
+    } finally {
+      consoleError.mockRestore();
+    }
+  }, 10000);
+});
diff --git a/test/useObservable.test.tsx b/test/useObservable.test.tsx
index 0ba963a7..a8f7da7f 100644
--- a/test/useObservable.test.tsx
+++ b/test/useObservable.test.tsx
@@ -5,11 +5,22 @@ import { Writable } from 'node:stream';
 import { renderToString, renderToPipeableStream } from 'react-dom/server';
 import * as firebaseAppModule from 'firebase/app';
 import { initializeApp, deleteApp, getApps, FirebaseApp, setLogLevel } from 'firebase/app';
-import { of, Subject, BehaviorSubject, throwError } from 'rxjs';
+import { defer, of, Observable, Subject, BehaviorSubject, throwError, timer } from 'rxjs';
+import { first, mergeMap } from 'rxjs/operators';
 import { useObservable, ReactFireOptions, version } from '../src/index';
 
 const _components = (firebaseAppModule as unknown as { _components: Map<string, unknown> })._components;
 
+class Boundary extends React.Component<{ children: React.ReactNode }, { error: Error | null }> {
+  state: { error: Error | null } = { error: null };
+  static getDerivedStateFromError(error: Error) {
+    return { error };
+  }
+  render() {
+    return this.state.error ? <div data-testid="err">{this.state.error.message}</div> : this.props.children;
+  }
+}
+
 interface AppWithContainer extends FirebaseApp {
   container: {
     getProvider(name: 'platform-logger'): {
@@ -483,4 +494,361 @@ describe('useObservable', () => {
       expect(html).not.toContain('another-requests-value');
     });
   });
+
+  describe('Subscription lifecycle & error eviction', () => {
+    it('releases the underlying source subscription after unmount', async () => {
+      for (const suspense of [false, true]) {
+        const subject$ = new Subject<number>();
+        const observableId = `sub-release-${suspense}-${Math.random()}`;
+
+        const Obs = () => {
+          const { data } = useObservable(observableId, subject$, { suspense });
+          return <div data-testid="obs">{String(data)}</div>;
+        };
+
+        const { unmount, getByTestId } = render(
+          <React.Suspense fallback={<div data-testid="fb">loading</div>}>
+            <Obs />
+          </React.Suspense>
+        );
+
+        await act(async () => {
+          subject$.next(42);
+        });
+
+        await waitFor(() => expect(getByTestId('obs')).toHaveTextContent('42'));
+        expect(subject$.observed).toBe(true);
+
+        unmount();
+        await waitFor(() => expect(subject$.observed).toBe(false), { timeout: 2500 });
+      }
+    });
+
+    it('evicts an errored cache entry so a subsequent mount with the same observableId recovers', async () => {
+      const observableId = `error-evict-${Math.random()}`;
+      let shouldFail = true;
+
+      const Obs = () => {
+        const source$ = shouldFail ? throwError(() => new Error('permission-denied')) : of('recovered');
+        const { data, status } = useObservable(observableId, source$);
+        return <div data-testid="val">{status === 'success' ? data : 'loading'}</div>;
+      };
+
+      const first = render(
+        <Boundary>
+          <Obs />
+        </Boundary>
+      );
+
+      await waitFor(() => expect(first.getByTestId('err')).toHaveTextContent('permission-denied'));
+      first.unmount();
+
+      // Wait for the 1s error eviction window to clear the errored entry from preloadedObservables
+      await new Promise((resolve) => setTimeout(resolve, 1100));
+      shouldFail = false;
+
+      const second = render(
+        <Boundary>
+          <Obs />
+        </Boundary>
+      );
+
+      await waitFor(() => expect(second.getByTestId('val')).toHaveTextContent('recovered'));
+      second.unmount();
+    });
+
+    it('evicts a cache entry when an error arrives after unmount during the release grace window (#485)', async () => {
+      const observableId = `error-after-unmount-${Math.random()}`;
+      const firstStream$ = new BehaviorSubject<string>('initial-user-doc');
+      const secondStream$ = new BehaviorSubject<string>('reauthenticated-user-doc');
+      let currentStream$ = firstStream$;
+
+      const Obs = () => {
+        const { data, status } = useObservable(observableId, currentStream$);
+        return <div data-testid="val">{status === 'success' ? data : 'loading'}</div>;
+      };
+
+      const first = render(
+        <Boundary>
+          <Obs />
+        </Boundary>
+      );
+      await waitFor(() => expect(first.getByTestId('val')).toHaveTextContent('initial-user-doc'));
+
+      // Unmount first (e.g. route leaves protected view on sign-out), then emit permission-denied
+      // while the 1s release grace window is still active, and remount immediately without waiting 1s.
+      first.unmount();
+      act(() => {
+        firstStream$.error(new Error('permission-denied-after-unmount'));
+      });
+
+      currentStream$ = secondStream$;
+
+      const second = render(
+        <Boundary>
+          <Obs />
+        </Boundary>
+      );
+      await waitFor(() => expect(second.queryByTestId('val')).toHaveTextContent('reauthenticated-user-doc'));
+      second.unmount();
+    });
+
+    it('keeps updating the remaining subscriber when another subscriber of the same observableId unmounts, and releases the source after both unmount', async () => {
+      const subject$ = new BehaviorSubject<string>('a');
+      const observableId = `shared-subscriber-update-${Math.random()}`;
+
+      const Obs = ({ testId }: { testId: string }) => {
+        const { data } = useObservable(observableId, subject$);
+        return <div data-testid={testId}>{String(data)}</div>;
+      };
+
+      const first = render(<Obs testId="one" />);
+      const second = render(<Obs testId="two" />);
+      await waitFor(() => expect(second.getByTestId('two')).toHaveTextContent('a'));
+
+      first.unmount();
+      act(() => subject$.next('b'));
+      await waitFor(() => expect(second.getByTestId('two')).toHaveTextContent('b'), { timeout: 1000 });
+
+      second.unmount();
+      await waitFor(() => expect(subject$.observed).toBe(false), { timeout: 2500 });
+    });
+
+    it('reuses the active subscription when remounting within the 1s release grace window', async () => {
+      const observableId = `grace-window-${Math.random()}`;
+      let subscribeCount = 0;
+      const base$ = new BehaviorSubject<string>('cached-val');
+      const counted$ = defer(() => {
+        subscribeCount++;
+        return base$;
+      });
+
+      const Obs = () => {
+        const { data } = useObservable(observableId, counted$);
+        return <div data-testid="val">{String(data)}</div>;
+      };
+
+      const first = render(<Obs />);
+      await waitFor(() => expect(first.getByTestId('val')).toHaveTextContent('cached-val'));
+      expect(subscribeCount).toBe(1);
+      first.unmount();
+
+      // Remount after 200ms (inside the 1000ms grace window); must reuse the active subscription.
+      await new Promise((resolve) => setTimeout(resolve, 200));
+      const second = render(<Obs />);
+      await waitFor(() => expect(second.getByTestId('val')).toHaveTextContent('cached-val'));
+      expect(subscribeCount).toBe(1);
+      second.unmount();
+
+      // After the 1000ms grace window expires, the next mount subscribes fresh.
+      await new Promise((resolve) => setTimeout(resolve, 1100));
+      const third = render(<Obs />);
+      await waitFor(() => expect(third.getByTestId('val')).toHaveTextContent('cached-val'));
+      expect(subscribeCount).toBe(2);
+      third.unmount();
+    });
+
+    it('releases an unconsumed warm-up subscription only after the first emission settles (#525, #790)', async () => {
+      const { SuspenseSubject } = await import('../src/SuspenseSubject');
+      const source$ = new Subject<string>();
+      let evicted = false;
+      new SuspenseSubject(source$, 50, true, () => {
+        evicted = true;
+      }, () => {});
+
+      // After the 50ms window plus the 1s release grace, the first emission is still pending, so warm-up must still hold the source (#525).
+      await new Promise((resolve) => setTimeout(resolve, 1100));
+      expect(source$.observed).toBe(true);
+
+      // Settle and complete the stream without any subscriber mounting (e.g. SSR or unused preload).
+      source$.next('settled');
+      source$.complete();
+
+      // On the next 50ms check, releaseWarmupWhenSettled unsubscribes warm-up and evicts the completed entry (#790).
+      await waitFor(() => expect(evicted).toBe(true), { timeout: 500 });
+      expect(source$.observed).toBe(false);
+    });
+
+    it('preserves a newer cache entry when a late subscriber on an evicted subject unsubscribes', async () => {
+      const { preloadObservable } = await import('../src/useObservable');
+      const observableId = `identity-guard-${Math.random()}`;
+
+      const firstSubject = preloadObservable(new BehaviorSubject('first'), observableId);
+      const initialSub = firstSubject.subscribe();
+      initialSub.unsubscribe();
+
+      // Wait for firstSubject to be evicted from preloadedObservables.
+      await new Promise((resolve) => setTimeout(resolve, 1100));
+
+      // Register a new subject under the same observableId and keep a subscriber active.
+      const secondSubject = preloadObservable(new BehaviorSubject('second'), observableId);
+      expect(secondSubject).not.toBe(firstSubject);
+      const activeSub = secondSubject.subscribe();
+
+      // A late caller holding the evicted firstSubject subscribes and unsubscribes, re-arming firstSubject's eviction timer.
+      const lateSub = firstSubject.subscribe();
+      lateSub.unsubscribe();
+      await new Promise((resolve) => setTimeout(resolve, 1100));
+
+      // The identity guard in onEvict must keep secondSubject in the cache.
+      expect(preloadObservable(new BehaviorSubject('third'), observableId)).toBe(secondSubject);
+      activeSub.unsubscribe();
+    });
+
+    it('re-registers an evicted entry when a late subscriber attaches, so the next read reuses its listener', async () => {
+      const { preloadObservable } = await import('../src/useObservable');
+      const observableId = `reregister-${Math.random()}`;
+      let subscribeCount = 0;
+      const source$ = defer(() => {
+        subscribeCount++;
+        return new BehaviorSubject('value');
+      });
+
+      const subject = preloadObservable(source$, observableId);
+      subject.subscribe().unsubscribe();
+
+      // The release evicts the entry, but a render that read it earlier still holds the subject.
+      await new Promise((resolve) => setTimeout(resolve, 1100));
+
+      // That render's effect subscribes late; the next read must reuse this entry, not open a second listener.
+      const lateSub = subject.subscribe();
+      expect(preloadObservable(source$, observableId)).toBe(subject);
+      expect(subscribeCount).toBe(2);
+      lateSub.unsubscribe();
+    });
+
+    it.each<[string, number, () => Observable<string>]>([
+      ['an errored', 0, () => throwError(() => new Error('permission-denied'))],
+      ['a completed', 0, () => of('doc')],
+      ['a live (control)', 1, () => new BehaviorSubject('value')],
+    ])('late subscribe on %s entry re-registers it %i time(s)', async (_label, expectedReregisters, makeSource) => {
+      const { SuspenseSubject } = await import('../src/SuspenseSubject');
+      let reregisters = 0;
+      const subject = new SuspenseSubject(makeSource(), 50, false, () => {}, () => {
+        reregisters++;
+      });
+
+      // Re-registering an errored entry would bring a stale error back on the next sign-in; a completed one would never leave.
+      const lateSub = subject.subscribe({ error: () => {} });
+      expect(reregisters).toBe(expectedReregisters);
+      lateSub.unsubscribe();
+    });
+
+    it('keeps the source attached while a consumer is suspended on a still-loading entry after an earlier subscriber unmounted', async () => {
+      const observableId = `suspended-consumer-${Math.random()}`;
+      const source$ = new Subject<string>();
+
+      const NonSuspense = () => {
+        const { status } = useObservable(observableId, source$);
+        return <div data-testid="a">{status}</div>;
+      };
+      const Suspended = () => {
+        const { data } = useObservable(observableId, source$, { suspense: true });
+        return <div data-testid="b">{data}</div>;
+      };
+
+      const firstMount = render(<NonSuspense />);
+      await waitFor(() => expect(firstMount.getByTestId('a')).toHaveTextContent('loading'));
+      firstMount.unmount();
+
+      // Inside the 1s release grace window, a Suspense consumer of the same id mounts and suspends on firstEmission.
+      await new Promise((resolve) => setTimeout(resolve, 200));
+      const secondMount = render(
+        <React.Suspense fallback={<div data-testid="fb">fallback</div>}>
+          <Suspended />
+        </React.Suspense>
+      );
+      expect(secondMount.getByTestId('fb')).toBeInTheDocument();
+
+      // The grace window expires before the first value arrives. The source must still be attached.
+      await new Promise((resolve) => setTimeout(resolve, 1200));
+      act(() => source$.next('arrived'));
+
+      await waitFor(() => expect(secondMount.getByTestId('b')).toHaveTextContent('arrived'), { timeout: 2000 });
+      secondMount.unmount();
+    }, 10000);
+
+    it('evicts a first-load error after 1s in non-suspense mode only', async () => {
+      const { SuspenseSubject } = await import('../src/SuspenseSubject');
+      const failAfter50ms = () => timer(50).pipe(mergeMap(() => throwError(() => new Error('permission-denied'))));
+
+      let evictedWithoutSuspense = false;
+      new SuspenseSubject(failAfter50ms(), 30_000, false, () => {
+        evictedWithoutSuspense = true;
+      }, () => {});
+      let evictedWithSuspense = false;
+      new SuspenseSubject(failAfter50ms(), 30_000, true, () => {
+        evictedWithSuspense = true;
+      }, () => {});
+
+      await new Promise((resolve) => setTimeout(resolve, 1300));
+      expect(evictedWithoutSuspense).toBe(true);
+      expect(evictedWithSuspense).toBe(false);
+    });
+
+    it('evicts an errored entry when its last Suspense subscriber unmounts, so a remount reads fresh', async () => {
+      const observableId = `suspense-error-remount-${Math.random()}`;
+      let stream$ = new BehaviorSubject<string>('doc-v1');
+      const Obs = () => {
+        const { data } = useObservable(observableId, stream$, { suspense: true });
+        return <div data-testid="val">{data}</div>;
+      };
+      const firstMount = render(
+        <Boundary>
+          <React.Suspense fallback={<div data-testid="fb">fallback</div>}>
+            <Obs />
+          </React.Suspense>
+        </Boundary>
+      );
+      await waitFor(() => expect(firstMount.getByTestId('val')).toHaveTextContent('doc-v1'));
+      act(() => stream$.error(new Error('permission-denied')));
+      await waitFor(() => expect(firstMount.getByTestId('err')).toHaveTextContent('permission-denied'));
+      firstMount.unmount();
+
+      stream$ = new BehaviorSubject<string>('doc-v2');
+      const secondMount = render(
+        <Boundary>
+          <React.Suspense fallback={<div data-testid="fb">fallback</div>}>
+            <Obs />
+          </React.Suspense>
+        </Boundary>
+      );
+      await waitFor(() => expect(secondMount.getByTestId('val')).toHaveTextContent('doc-v2'));
+      secondMount.unmount();
+    });
+
+    it('serves a completed one-shot entry to a remount from the cache without re-subscribing the source', async () => {
+      const observableId = `once-cache-${Math.random()}`;
+      let sourceSubscriptions = 0;
+      const once$ = defer(() => {
+        sourceSubscriptions++;
+        return of('doc');
+      }).pipe(first());
+      const Obs = () => {
+        const { data } = useObservable(observableId, once$);
+        return <div data-testid="val">{data}</div>;
+      };
+
+      const firstMount = render(<Obs />);
+      await waitFor(() => expect(firstMount.getByTestId('val')).toHaveTextContent('doc'));
+      firstMount.unmount();
+      const secondMount = render(<Obs />);
+      await waitFor(() => expect(secondMount.getByTestId('val')).toHaveTextContent('doc'));
+      secondMount.unmount();
+
+      expect(sourceSubscriptions).toBe(1);
+    });
+
+    it('does not evict a mounted one-shot entry when the warm-up release fires', async () => {
+      const { SuspenseSubject } = await import('../src/SuspenseSubject');
+      let evicted = false;
+      const subject = new SuspenseSubject(of('doc'), 50, false, () => {
+        evicted = true;
+      }, () => {});
+      const subscription = subject.subscribe();
+      await new Promise((resolve) => setTimeout(resolve, 150));
+      expect(evicted).toBe(false);
+      subscription.unsubscribe();
+    });
+  });
 });