I might be in the wrong place and maybe should report this to Mozilla, but no one else seems affected by searching around, so I believe it might be elementary OS-specific.
Since version 65, when you minimize Firefox by clicking the dock icon and maximize again, going to a new page or reloading the current one gives you a blank page. The pages loads, as you can see the site name and favicon, but nothing is displayed. Sometimes it happens right away, other times you have to minimize/ṃaximize a couple times. Also the hamburger menu is unresponsive. The only cure is to relaunch Firefox.
I tried so far:
- Disabling hardware acceleration
- Restarting Firefox in Safe Mode
- Clear cookies and cache
- Update to 65.0.1
It might be related to this question.
Theme is basic light, only add-on is AdGuard. Using Nouveau stock display driver.
I am on Juno 5.0 with all the latest updates, Dell XPS 9550.