Bee Thank you for sending us your Spine project! I was able to confirm the issue where the Rotate key button turns orange even though the rotation value does not change. More than that, what was very strange was that there were several timelines of the root bone that had split:
Anyway, I think there is some kind of bug in the processing of root bones, so I created an issue ticket to fix it:
EsotericSoftware/spine-editor882
However, if possible, I would like to find out how to reproduce this state from a new project. I tried to reproduce it a little, but I couldn't reproduce the same state. To get some hints, could you tell us what kind of operation you were doing before you got into this state?
It seems that this situation of the timeline being split for the same bone did not occur in other animations of your skeleton, so I am guessing that the operation while making the Death animation is involved, but could you tell me what kind of work you were doing?
