Mouse cursor is out of place

[Globetrotter129]

Mouse cursor is misaligned when using sbs screen distance feature and resolutions don't scale up to 3840x1080 except using emustation (linux apps?) and have to be stretched.

[wheaney]

This is a known issue and isn't likely to be fixed soon because it's a consequence of how mouse rendering is done (in gamescope and most compositors). Namely that the mouse is typically rendered in its own thread and often bypasses the compositor entirely.

[wheaney]

Renamed this since it's not just tied to SBS mode.