This is regarding Case 1236423. Version 2020.1.0b5 The steps to reproduce are: 1. Enter play mode. 2. Switch to scene viewer. 3. Open profiler. -- Update, Step 3: Open editor top toolbar dropdown menu, ie "Window" -- no need to actually open the profiler. So, this seems to be related to native code invoked via the Editor GUI. -- 4. Stop play mode. 5. Start play mode. 6. Try to switch to scene viewer. This only happens on the second start of play mode, and it can be worked around by restarting the editor after each time play mode is stopped. Related log contents: ================================================================= Got a SIGSEGV while executing native code. This usually indicates a fatal error in the mono runtime or one of the native libraries used by your application. ================================================================= Naturally there's more. Log attached. Update Note: I saw zero crash cases in the issue tracker, so I'm just playing around with the crash to try and gather more breadcrumbs. Not sure I can provide much more though.