I updated to ubuntu 20.04 and my maximize, minimize and close icons are gone. And the settings app is crashing.
This is my firefox
This is settings
Edit: I changed the theme to adwaita dark and settings works again
P.S. Firefox still doesn't work but hovering over buttons shades them
Edit 2: Installed xfce and everything is working. I will try reinstalling gnome when I am bored with xfce