I did try it with that form as well but I didn't get the crash and couldn't replicate it so far. So I assume whatt triggered it might have been a more complicted order of stuff you did randomly.
Do you by any chance have a save file before it happened? Also did it happen before or after finishing the story in the mines?
Also are you playing on a windows computer? Emulating the game on mobile often leads to unexpected bugs too.
Did you have by any chance had the game running for a very long time when it happened? If so this could been a memory crash.