d6d6dc65c1
When all monitors are blanking or after suspending there might not be any monitors temporarily. We can't draw a black background when we don't know the size of the monitor it's fullscreen on but it's fine because there actually is no monitor. Closes: https://gitlab.gnome.org/GNOME/mutter/-/issues/2508 Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2695>