I am not sure if they're bugs:
1. When I made a sprite flipped,
the flipped frame will eternally stay on my screen after changing layout.
2. When I put 2 flipping sprites on the same screen,
and flip them at the same time. the second sprite sometimes won't flip in right way.
3. I don't know what happened.
In my project, the sprite will move automatically to another position and resize to a smaller size after calling flip,
and I can't reproduce this condition in the demo project.