(In reply to falaca from comment #0)
> I can only reproduce this with when I have 2 displays connected. My primary
> screen is set to 2560x1440, and the secondary screen in portrait mode is set
> to 1200x1920 on the left-hand side. I have the landscape monitor centered
> with respect to the portrait one, so y = 240 in ~/.config./monitors.xml.
> 
> I cannot observe the bug when both screens are aligned at the top, i.e.,
> with y=0 in ~/.config/monitors.xml.

Have you tried moving the landscape monitor to y = 0 and back to y = 240 after
suspend/resume, while the session is up? Does that fix the problem, or does it
stay corrupted?