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Unreal Editor crashes randomly on ESC

When I press ESC to stop the viewport simulation, the whole editor will occasionally go down with a crash.

I get the error “Pure virtual function being called while application was running (GIsRunning == 1)”

This happens to me 2 or 3 times a night ( at least until I try to reproduce it ).

I just can’t figure out why it works 99% of the time and not the 1%.

My project at the moment is an Empty project using C++ blueprint classes for GameInstance, UserWidget and HUD, and just a basic blueprint for GameMode with no code attached to that.

I’m basically just working on draggable windows, and there’s literally nothing else in the level except 7 default actors.

Does this happen to anyone else, and what have you done to fix it?