I no longer use Ubuntu, I'm on Arch so I don't know for sure. But it's not happening over here with GNOME 3.26.3 so I assume that the issue has probably gone.
** Changed in: ubuntu-gnome Status: New => Invalid ** Changed in: gnome-system-monitor (Ubuntu) Status: Incomplete => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1539289 Title: Divisory line at the top partly disappears in certain cases To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-gnome/+bug/1539289/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs