f4b58f35ba
The preferred way to unmaximize/untile a window is by using a drag gesture. Extend the available area to start this gesture into non-reactive parts of the top bar above the window - with that we take advantage of the "infinite height" of the screen edge, and the extra space is particularly useful when the window has its titlebar hidden. https://bugzilla.gnome.org/show_bug.cgi?id=666359