The ability to change the shell theme is hidden behind the User Themes extension. To do it you need to:
1. sudo apt install gnome-shell-extensions 2. In gnome-tweaks enable Extensions > User themes 3. Restart gnome-tweaks 4. gnome-tweaks > Appearance > Themes > Shell ... is now selectable. ** Changed in: yaru-theme (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1832137 Title: Switch Adwaita/Yaru shell themes under vanilla/ubuntu gnome sessions To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/yaru-theme/+bug/1832137/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs