I'm seeing the problem in xorg sessions too. Note that VLC’s user interface is a Qt application. Chromium is a snap, and not a pure GTK application (although using GTK to draw window decorations and menus), as pointed out by Daniel. Similarly, firefox is not a pure GTK application.
Also of interest: gnome-terminal (a pure GTK application) doesn't respect any theme setting, its window title bar is always dark. ** Changed in: vlc (Ubuntu) Status: New => Confirmed ** Changed in: chromium-browser (Ubuntu) Status: New => Confirmed ** Summary changed: - Changing theme Light<->Standard preserves theme for Firefox title bar (in Xorg sessions) + Changing theme Light<->Standard doesn't restore the title bar color -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1872844 Title: Changing theme Light<->Standard doesn't restore the title bar color To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/1872844/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs