When in full-screen mode the select bar cannot be moved, however, in windowed mode the select bar can be moved around. Going back to full screen mode, the select bar returns to its same position as before, and is still stuck.
I have tried turning it on and off in HUD settings and it didn't fix anything.
I took a screenshot, but I am unsure how this shows it: https://imgur.com/a/U9O22RP