[Linux] Multi-monitor issues

[MrSchism]

Not sure if this is the game or GM:S, but the game assumes it's on the left-most monitor, and warps the mouse there between levels, even if the game is not there.

My tester thinks it may be a mouse pointer re-init between maps.

I found this as a potentially relevant link: http://gmc.yoyogames.com/index.php?showtopic=537049 but it doesn't suggest a solution.