[SubScreen] Oddly shaped desktops causes inncorrect "subscreen region overflows the screen"
Desktop 2 and 1 has 148 px spacing inbetween them, when using the ':screen-top=-1080' you get the spacing and the bottom of screen 2 in the capture.
When using anything more than -1080 upto -1228 (correct for this setup) one get the "subscreen region overflows the screen" error.