BehaviorTree in multi-scene breaks

[Someone]

Does the BehaviorTree runtime link itself to a specific scene? I am experiencing a weird bug.

1. Load Scene A additively
2. Spawn BehaviorTree in Scene A
3. BehaviorTree works fine
4. Load Scene B additively
5. SceneManager.MoveGameObjectToScene(gObj, sceneB)
6. Unload Scene A
7. BehaviorTree just... stops updating. No errors, no warnings, no task events are called. Nothing.
   
   If so, is there a workaround?

 

[Someone]

Found the problem.
I have to explicitly create an instance of BehaviorManager and not let it be auto-created, and then ensure it doesn't get destroyed.

It seemed to get auto-created in scene A.
So, when scene A got unloaded, the BehaviorManager got unloaded, too.