Incorrect display selected when spanning multiple displays

Screen.MoveMainWindowTo misbehaves when window is windowed and spans several monitors

To reproduce this issue, arrange your monitors vertically in windows display settings. The display with the smallest resolution should be the top one. Then, start the build with -window-width and -window-height parameters that span the entire desktop virtual space, and use "-monitor x" command to specify which display the game should be on. Observe that no matter which monitor you specify, the window top left corner will never be on the top monitor.