I having a problem with layer when playing the character animation. For example: the hat of the character should be in front of the head but it stay after the head in some animations. Playing other animation may fix this problem. Its seem to be random.
The animation plays fine on the Spine main program. So I think this should belong to the runtime section.
For your information, I use MOAI with generic lua runtime, with the spine.lua file from corona. I only modified a bit of its image creating code to make it work with MOAI. I already checked my code, and I can not see any problem with it. So I think the problem is the generic lua runtime.