So when I make my level with tile maps, over time I cannot undo tiles that I placed for some reason. it gives me this error in the output:
core/undo_redo.cpp:337 - Condition ' action_level > 0 ' is true. returned: ""
core/undoredo.cpp:316 - Condition ' actionlevel > 0 ' is true.
I'm using godot 3.0.6