i just updated it to 3.5.44 pro
yes im using the offic runtime and this shader http://es.esotericsoftware.com/forum/Sprite-Shaders-for-Unity-5838
i downloaded them few months ago
"And are you using the SkeletonAnimation component"
do you mean, is there a skeleton data imported? i got everything, atlas, skeleton data , root png...
in the original spine anim, i used plenty of frames to avoid a thing just as like this but seems like unity is skipping the frames and just switch the anim straight to the end frame of the next anim.
i was searching for a long time for a tutorial how to set up and write a code for spine but all i could found was out of date and the guy who helped me put this together never seen spine before and it was a quick job so thats why i thinking it is the code.