Crash after undo + delete on Switch

[Pistonight]

It seems to crash every time after I press ZL to undo then press B to delete one character

Versions:
Switch: 16.0.2
Atmosphere: 1.5.2
vgedit: 2.1

[vgmoose]

I've reproduced this a few times, but it's inconsistent. Definitely there's an issue with the undo/redo stack though, even when it doesn't crash, rapidly undoing/redoing/deleting/typing will eventually mess up the and drop some actions.