Incredibly minor bug, but a bug nonetheless. Changing the name of an instance will not update the title of the properties window if the instance is selected. As you can see, the title of the window still says “ItsAMeMario” even though I changed the part’s name to “YayForMeLuigi”.
Very easy to reproduce. Just select any instance and change the instance’s name. It does not have to be changed from the properties window.
Quick video:
https://i.gyazo.com/df020c32501d497da8d1e8cc11a0a000.mp4
Screenshot: