A track is playing with two track entries, A (manipulating scale of a bone) and B (manipulating transform of a bone). The transition from A -> B has a mix duration of 1 second.
During the mixing (B.mixTime > 0) between A and B, the timeScale of B is set to 0.
After a call to AnimationState.update, the timeScale of B is again set to 1.
Playing the track to end should result in a state where the transform is as B specifies, and the scale is back in the setup pose. Instead of that, the scale is as it was the last frame that it was applied by A.
Made a test case for you:
https://github.com/smaren/spine-runtimes/blob/timescale-0-bug/spine-ts/webgl/demos/timescalebug.js
