Version 3.18.5-1ubuntu2 from proposed fixes this issue partially. In order to work, the window manager needs to support compositing, otherwise we now get a black margin outside the window (cf. attached screenshot).
** Attachment added: "margin_without_compositing.png" https://bugs.launchpad.net/ubuntu/+source/gtk+3.0/+bug/1518661/+attachment/4527891/+files/margin_without_compositing.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1518661 Title: Apps with HeaderBar have margin outside window To manage notifications about this bug go to: https://bugs.launchpad.net/gtk/+bug/1518661/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs