Cannot repro with a new project.

Steps:
1. Open attached project
2. Load '2DCharacter' scene
3. Drag 'Crates' GameObject to Project Browser
==> Editor crashes

Call Stack:
ERROR: SymGetSymFromAddr64, GetLastError: 'Attempt to access invalid address.' (Address: 000000014513CC43)
0x000000014513CC43 (Unity) (function-name not available)
ERROR: SymGetSymFromAddr64, GetLastError: 'Attempt to access invalid address.' (Address: 000000014B649B77)
0x000000014B649B77 (Unity) (function-name not available)
0x000000015E6ED7EE (Mono JIT Code) (wrapper managed-to-native) UnityEditor.PrefabUtility:GetOutermostPrefabInstanceRoot (UnityEngine.Object)
0x000000015E6ED2B3 (Mono JIT Code) [D:\CustomUnity\NestedPrefabs\Editor\Mono\HandleUtility.cs:595] UnityEditor.HandleUtility:FindSelectionBase (UnityEngine.GameObject)
...