From 7a70f5b58a97b1dbf8cc9750e276995da2fa5833 Mon Sep 17 00:00:00 2001
From: Harshith Rai <harshith.r.rai@gmail.com>
Date: Wed, 1 Jul 2026 17:48:03 +0530
Subject: [PATCH 1/2] fix: preserve false value for default_head_tags_disabled
 in screen renderer update

---
 src/tools/auth0/handlers/prompts.ts        |  2 +-
 test/tools/auth0/handlers/prompts.tests.ts | 36 +++++++++++++++++++++-
 2 files changed, 36 insertions(+), 2 deletions(-)

diff --git a/src/tools/auth0/handlers/prompts.ts b/src/tools/auth0/handlers/prompts.ts
index f092112e7..aaceffc68 100644
--- a/src/tools/auth0/handlers/prompts.ts
+++ b/src/tools/auth0/handlers/prompts.ts
@@ -610,7 +610,7 @@ export default class PromptsHandler extends DefaultHandler {
       updatePayload = {
         ...updatePrams,
         rendering_mode: Management.AculRenderingModeEnum.Advanced,
-        default_head_tags_disabled: screenRenderer.default_head_tags_disabled || undefined,
+        default_head_tags_disabled: screenRenderer.default_head_tags_disabled ?? undefined,
         head_tags: screenRenderer.head_tags as Management.AculHeadTag[],
       };
     }
diff --git a/test/tools/auth0/handlers/prompts.tests.ts b/test/tools/auth0/handlers/prompts.tests.ts
index 4f647cf46..a65760420 100644
--- a/test/tools/auth0/handlers/prompts.tests.ts
+++ b/test/tools/auth0/handlers/prompts.tests.ts
@@ -440,8 +440,9 @@ describe('#prompts handler', () => {
             return Promise.resolve({ data });
           },
           rendering: {
-            update: () => {
+            update: (_prompt: string, _screen: string, payload: { default_head_tags_disabled?: boolean | null }) => {
               didCallUpdateScreenRenderer = true;
+              expect(payload).to.have.property('default_head_tags_disabled', false);
               return Promise.resolve({ data: {} });
             },
           },
@@ -650,6 +651,39 @@ describe('#prompts handler', () => {
       });
       sinon.restore();
     });
+
+    it('should send default_head_tags_disabled: false to the API (not drop it as undefined)', async () => {
+      let capturedPayload: any = null;
+
+      const auth0 = {
+        prompts: {
+          rendering: {
+            update: (_prompt: string, _screen: string, payload: any) => {
+              capturedPayload = payload;
+              return Promise.resolve({ data: {} });
+            },
+          },
+        },
+        pool: new PromisePoolExecutor({
+          concurrencyLimit: 3,
+          frequencyLimit: 1000,
+          frequencyWindow: 1000,
+        }),
+      };
+
+      const handler = new promptsHandler({ client: auth0, config: config });
+
+      await handler.updateScreenRenderer({
+        prompt: 'login',
+        screen: 'login',
+        rendering_mode: 'advanced',
+        default_head_tags_disabled: false,
+        head_tags: [],
+      });
+
+      expect(capturedPayload).to.not.equal(null);
+      expect(capturedPayload).to.have.property('default_head_tags_disabled', false);
+    });
   });
   describe('withErrorHandling', () => {
     let handler: any;

From 72f6b7d90e27ed93037f0317644168938a2a8ce7 Mon Sep 17 00:00:00 2001
From: Harshith Rai <harshith.r.rai@gmail.com>
Date: Wed, 1 Jul 2026 18:33:11 +0530
Subject: [PATCH 2/2] format: prettier fixes

---
 test/tools/auth0/handlers/prompts.tests.ts | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/test/tools/auth0/handlers/prompts.tests.ts b/test/tools/auth0/handlers/prompts.tests.ts
index a65760420..19abfb855 100644
--- a/test/tools/auth0/handlers/prompts.tests.ts
+++ b/test/tools/auth0/handlers/prompts.tests.ts
@@ -440,7 +440,11 @@ describe('#prompts handler', () => {
             return Promise.resolve({ data });
           },
           rendering: {
-            update: (_prompt: string, _screen: string, payload: { default_head_tags_disabled?: boolean | null }) => {
+            update: (
+              _prompt: string,
+              _screen: string,
+              payload: { default_head_tags_disabled?: boolean | null }
+            ) => {
               didCallUpdateScreenRenderer = true;
               expect(payload).to.have.property('default_head_tags_disabled', false);
               return Promise.resolve({ data: {} });