We found there are some bugs in spine when we use the function animation mixture.If we change spine's animation to another animation while the previous animation doesn't end,there happened a show bug,some pictures in previous animation will show forever.
We had checked the result of it.

x,y,z is the position track.
rgba is the track that changed RGBA information.
picture is the track that changed picture in this track.
Bug1 happened in this situation: we change to the animation 2 while the animation 1 isn't end,at the same time,there isn't any rgba track in animation 2.the bug 1 happened.
Bug2 happened in this situation: we change to the animation 2 while the animation 1 isn't end,at the same time,there isn't any position track in animation 2.the bug 2 happened.
Bug1 and Bug2 are all the bugs that there will show animation1's icon or rgba information in animation 2.
for the rgba track, when spine change to another animation while this animation didn't end normally, if there isn't any rgba track in the other animation,so he didn't know how to process those rgba information in the previous animation,then he just keep those information in previous animation.