Actually, the transparent top bar when windows are not maximized is a GNOME 3.26 feature.
https://help.gnome.org/misc/release-notes/3.26/#system-refinements ** Changed in: ubuntu-gnome-meta (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/1731641 Title: Top bar transparency isn't removed on installation To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-gnome-meta/+bug/1731641/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs