@gostovah if the mesh is bound to bones, check the keys for the bones related to the mesh.
If it has no bones bound to it, then delete the deformation keys.
Make sure you have no filtering active on the dopesheet that might be preventing you from seeing all the keys (check the little funnel icon in the upper left corner of the dopesheet)
I saw the file you sent us,
It looks like the bone torso_chainbone_1 is the culprit. Considering it is bound to a path constraint, there might be problems with the path itself.
What version of Spine did you open it with?
What version was used to make the file?
Is the runtime aligned with that version or the version you used now?
I saw no issue in the file, no shakes, and everything was rendered nicely, I'm on the latest beta. Maybe you might want to consider updating your project as well if possible?
