Problem statement
1) What I have tried: creating a bone and inserting any image.
2) What I expected: rotating the image along the axis.
3) What actually happened: the image disappears.
Reproducing the problem
Step-by-step instructions to reproduce the problem: create a bone, attach an image, and add a minus sign in the first line.
Attach the .spine project file, if possible.
Editor information
Spine Editor version: 
If you got any error messages, entire spine.log file (or attach):
<replace with spine.log>
