I have many of these same issues. I actually think ublock is causing some of them; removing and reinstalling fixed some of the hangs for a while, but they eventually came back. I think I also switched from Firefox to chrome version or vice versa.

The general “chrome” of the app is unfortunately a buggy mess regardless of extension config.

I still think it’s easily worth it because for some critical sites it adds so much value. I just accept I’ll have to force quit a few times a day.

Also, PSA, extensions don’t automatically update on desktop.