Strange behaviour with fullscreen on dual head

Submitted by Bernd Schmidt

Assigned to Olivier Fourdan @olivier

Link to original bug (#9051)

Description

Created attachment 4519 A patch that seems to fix it.

I have a set up with two monitors, as :0.0 and :0.1. When one of the monitors is showing a fullscreen window (e.g. a movie in vlc), and I click on a window on the other monitor to set focus to it, the fullscreen window disappears.

Apparently, the window manager assumes that the window that is losing focus is on the same screen, and disables its fullscreen status. I've made a small patch, which is attached, that seems to correct the problem.

Patch 4519, "A patch that seems to fix it.":
fullscreen.diff

Version: 4.10.0