Hi, it seems very strange I'll try to reproduce the issue and come back to you. There was a change in the rotation tool to fix an issue with bones, I hope it's not due to that but if it is the case, it will be fixed for the next update
Great, thanks for looking into it! Please let me know if you are able to replicate the issue. To test the issue and make sure it wasn't just a problem with my project, I made a new square object using the program's 3D objects and added it to the animation timeline, and then tried rotating it between keyframes, and the issues unfortunately was the same as can be seen in the video. Let me know if you need anything on my end, happy to send through a project file or another video if it helps.
EDIT: I actually just tried loading my project in the old version of the program and noticed the issue does not occur, but obviously there are issues with UNDO/REDO of Gizmo changes to nodes which you fixed in the latest version which I can't go without. :)