To reproduce it, try switching the order of your displays. For example, make the display on port 0 be on the right of the display on port 1 (instead of the "natural" order of 0=left, 1=right.) I also notice that changing the orientation of the primary display to "portrait right" causes problems, whereas landscape or portrait left don't.
To reproduce it, try switching the order of your displays. For example, make the display on port 0 be on the right of the display on port 1 (instead of the "natural" order of 0=left, 1=right.) I also notice that changing the orientation of the primary display to "portrait right" causes problems, whereas landscape or portrait left don't.