Started twiddling with themes for Gnome Shell on Pop OS (I know I'm not supposed to but I can't help it, this isn't about that). I used to be able to change theme through Tweaks, but now it doesn't take effect.
After digging through theme install code I found I can use terminal to go gsettings set org.gnome.desktop.interface gtk-theme 'theme-name' to set a new theme and that works.
Just glad I have something that works for now.
Linux Geeks doing what Linux Geeks do..