I’ve found that the Undo function is pretty limited when editing. Either it doesn’t do anything at all, or more frustratingly, it doesn’t work after I move a group of buttons or other elements and accidentally place them over something else. This happens pretty regularly. Same goes for accidental resizing. The only solution is to rebuild what I lost. Is there some way a warning could be added so that you can cancel a move or change that’s not undoable? I get if you can’t make everything undoable, just a warning would be enough.
The undo/redo behavior will be vastly improved in MGP 1.6.10 schedule for the next week.