Update CHANGELOG.md

Author: EmandM

com.unity.netcode.gameobjects/CHANGELOG.md

@@ -15,6 +15,7 @@ Additional documentation and release notes are available at [Multiplayer Documen
 
 ### Fixed
 
+- Fixed inconsistencies in the `OnSceneEvent` callback. (#3487)
 - Fixed issue where `NetworkVariable`s on a `NetworkBehaviour` could fail to synchronize changes if one has `NetworkVariableUpdateTraits` set and is dirty but is not ready to send. (#3465)
 - Fixed issue where when a client changes ownership via RPC the `NetworkBehaviour.OnOwnershipChanged` can result in identical previous and current owner identifiers. (#3434)