I'm closing this, as Frederik told, there are multiple ways of achieving that, and not that no other way is supported upstream, in GNOME Shell. If you want another way, please open the issue on the GNOME Shell upstream gitlab issue tracker.
You would note that you can do it: - via the user-themes extensions - or switch to the gnome-session, which is the convenient way we (ubuntu) provided for people in your case, wanted to be closer to default GNOME look and feel. We can't support officially (like adding other user's session) for combination of different Shell theme - but with this GTK theme, and another Qt theme). A choice had to be made and we tried to covered most of them, even coping with people who wanted default Shell theme (via the session), which required quite some engineering. I hope you understand. ** Changed in: yaru-theme (Ubuntu) Status: New => Won't Fix -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1788547 Title: gnome-shell notifications use Yaru theme even if Yaru is not selected To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/yaru-theme/+bug/1788547/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs