My file seems corrupted. It has artboards with no titles. More than that, the file begins to act buggy as can be seen in the video. I duplicate the artboards and move them. At that point, I cannot deselect the arboards. Changing tools, hitting cancel, etc does nothing. You can also see weird stuff going on (bounds of artboards scaling in a weird way as I zoom). Also yeah, the program did crash just barely while working in this file.
Updating system software
Updating Adobe XD
Duplicating the file
Creating new artboards in a new file and copying/pasting the content to them. The same bugs on this file even carry over to new files when I copy the content.
This is definitely quite strange behavior. In addition to what Ares has suggested, have you tried swtiching to a different application whenever this situation happens? Have you tried sign out of XD and sign back in?
Let us know if that helps. We will try our best to help.