Addition/correction to my above comment, window buttons are actually added to the right of the top bar, fairly closely mimicking the 17.04 approach. Attaching a screenshot.
** Attachment added: "Screenshot from 2017-09-14 08-33-05.png" https://bugs.launchpad.net/ubuntu/+source/ubuntu-themes/+bug/1717023/+attachment/4949881/+files/Screenshot%20from%202017-09-14%2008-33-05.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1717023 Title: Jarring double gradient when window is maximized To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-themes/+bug/1717023/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs