Middle-click does not stop propagating
I set middle click on the title bar to minimize a window. It works fine but it seems to propagate beyond the window that it minimizes. I can see this effect if the window behind is a Firefox tab where middle click closes the tab. So, after the window on which I use middle check gets minimized, if my mouse is over a Firefox tab, that tab gets closed from the same click.
Name : gnome-shell
Version : 3.28.3
Release : 1.fc28
Arch : x86_64
Size : 11 M
Source : gnome-shell-3.28.3-1.fc28.src.rpm