Since the last fix I can no longer set rotation back to 0 degrees after setting a non zero value. Probably a side effect of the fix for the disapearing part (#8).
For scaling the fix seems to work well. Easiest fix would probably to just add a reset button that sets all rotations - or each axis individually, whatever is easier for you, to zero and keep the fix otherwise in place as it is.
Keep up the good work.