I think it may have something to do with the gtk header bar, considering how the problem (at least in my case) applies to Nautilus, the browser previously known as Epiphany, the gnome core application Documents, as well as the gnome core application Photos; these applications all use the gtk header bar.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1310322 Title: Nautilus unmaximised directory windows have a 50 pixel barrier from top panel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-gnome/+bug/1310322/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs