I just upgraded from 18.04 to 19.04 to 19.10 and for a day it was seemingly fine. I removed wayland and using x11 now but today, for some reason, gnome-tweaks just bugged out.
Tweaks opens up like this now. If I toggle a switch, the top bar navigation appears and then I can back out to the main menu:
And I just discovered that if I leave animations off, the whole UI bugs out. Flickering from one state or another.
I tried removing it with
sudo apt purge gnome-tweaks and reinstalling but the problem persists.
Can someone shed some light on this please.