We are sorry for the inconvenience! Which runtime (spine-unity, spine-ue4, etc) and which version of the runtime (in spine-unity the version is the name of the unitypackage) are you using?
If you are using the latest 4.0 runtime version, could you please send us your problematic Spine project so that we can reproduce the problem? You can send it as a zip package to contact@esotericsoftware.com (briefly mentioning this forum thread URL so that we know the context) or attach it to a posting here on the forum.