Ubuntu 20.04:
This is still a problem in gnome-tweaks. But you can ignore it and instead use the 'Extensions' app which seems to come from installing package 'gnome-shell-extension-prefs'.
Ubuntu 20.04:
This is still a problem in gnome-tweaks. But you can ignore it and instead use the 'Extensions' app which seems to come from installing package 'gnome- shell-extension -prefs' .