I can’t re-order tracks by dragging up or down and I can’t drag clips around either. It’s happened a few times now and seems to be after I disable an instrument track, but I’m not sure…
Don’t think it’s a problem with my mouse or keyboard because the problem goes away when I reopen the project.
No issue, here, when attempting to re-order track positions or moving events/parts, even after having disabled a given instrument track.
Is this happening with a spcific project or with all of yours ? In the first case, I would try to use the File > Save New Version command. Otherwise, I would try to reopen Cubase in safe mode.