[2020] Content Manager Glitches?

No, that shouldn't happen. I know it can happen due to a mod messing with the UI, but I'm not certain that's the only reason. If you can upload your output_log.txt (player.log on Mac and Linux) somewhere, then I can take a look and see if I spot a known issue.

This guide explains where to find the log and suggests some places you can upload it to.

https://steamcommunity.com/sharedfiles/filedetails/?id=463645931&searchtext=log