update

Adding changelog entry.

Author: NoelStephensUnity

com.unity.netcode.gameobjects/CHANGELOG.md

@@ -24,6 +24,7 @@ Additional documentation and release notes are available at [Multiplayer Documen
 
 ### Fixed
 
+- Fixed issue where `NetworkVariable` was not properly synchronizing to changes made by the spawn and write authority during `OnNetworkSpawn` and `OnNetworkPostSpawn`. (#3878)
 - Fixed issue where `NetworkManager` was not cleaning itself up if an exception was thrown while starting. (#3864)
 - Prevented a `NullReferenceException` in `UnityTransport` when using a custom `INetworkStreamDriverConstructor` that doesn't use all the default pipelines and the multiplayer tools package is installed. (#3853)