Hi!
After I experimented with Text Mesh Pro, I can't load any scenes anymore. What I did, is to mark multiple text objects to changed the color and this Mac mouse working circle appeared and never disappeared. So I had to restart Unity. All my scenes can't be loaded. Unity just stop working.
At least I had a backup 3 days older than this broken project, so I started the backup, copied the scenes from the broken project to the backup project. And also copied some graphics, models etc. I imported after this backup, so it works again.
What should I do if I didn't have any backups? Maybe I could delete Text Mesh Pro Asset and reinstall it.