PhysicsScene is empty after calling MarkSceneDirty

Hallo,

I use Unity 2019.4.17f1. I call the following code when I edit a prefab in the prefab scene:

Code (CSharp):

1.  
2.                 EditorSceneManager.MarkSceneDirty(MyLevel.Current.gameObject.scene);
3.            
4.                 var prefStage = UnityEditor.Experimental.SceneManagement.PrefabStageUtility.GetCurrentPrefabStage();
5.                 if (prefStage != null) {
6.                     var scene = MyLevel.Current.gameObject.scene.GetPhysicsScene();
7.                     Debug.Log("Is empty " + scene.IsEmpty() + " is valid " + scene.IsValid());
8.                     EditorApplication.delayCall += () => {
9.                         Debug.Log("Is empty " + scene.IsEmpty() + " is valid " + scene.IsValid());
10.                     };
11.                 }

The first Debug.Log prints False for scene.IsEmpty(), the second True - which means I can't use PhysicsScene.Raycast anymore (even though all the colliders that were there before still exist). Is this expected behaviour? If not, is there a workaround?

Kind regards,
ratking

 

Is there really no solution to this? EditorSceneManager.MarkSceneDirty(prefabStage.scene); invalidates Physics, and the only workaround I found so far (calling AssetDatabase.SaveAssets() directly afterwards) creates a lot of other problems.

 

Yes, sorry, the gameObject in question is inside the prefStage. They are very much related. It basically is the root gameObject of the Prefab Scene.