update

Removing the work around method as setting GhostField<T>.Value after instantiating works now.

Author: NoelStephensUnity

com.unity.netcode.gameobjects/Runtime/Components/Helpers/NetworkObjectBridge.cs

@@ -61,11 +61,6 @@ private void OnValidate()
         /// N4E-spawned hybrid prefab instances.
         /// </summary>
         internal GhostField<ulong> NetworkObjectId = new GhostField<ulong>();
-        public void SetNetworkObjectId(ulong networkObjectId)
-        {
-            NetworkObjectId.PresetValue(networkObjectId);
-            NetworkObjectId.Value = networkObjectId;
-        }
 
         /// <summary>
         /// Currently, NGO provides the parenting event handling via <see cref="ParentSyncMessage"/>.

com.unity.netcode.gameobjects/Runtime/Spawning/NetworkSpawnManager.cs

@@ -1176,7 +1176,7 @@ internal bool AuthorityLocalSpawn([NotNull] NetworkObject networkObject, ulong n
             // the NetworkObject is fully spawned.
             if (networkObject.HasGhost)
             {
-                networkObject.NetworkObjectBridge.SetNetworkObjectId(networkObject.NetworkObjectId);
+                networkObject.NetworkObjectBridge.NetworkObjectId.Value = networkObject.NetworkObjectId;
             }
 #endif