float down here !
Color box from upper right to bottom is moving, if you choose to.
A rare thing.
If image is to big, it will fail to save.
I was to chicken to press yes. This bug happens rarely.
Small view vibrate to up, down, left to right at random, about 1 mm to every direction, like in a invisible box (on screen, no sound involved) when moved.
Only two times happened.
You can check "Pixly (android program) deletes its .pal file bug" too :
pixly android program deletes its pal