My monitor is rotated into portrait mode with nvidia's driver. The desktop is therefore 1200x1920. X-Plane 11.11r2 seems to be rendering at 1280x1920 (noticed by using the File/Screen Shot function). So there are 80 pixels being rendered(seen in the screen shot) but not drawn to the screen. The top menu bar is missing the last three icons (including the settings icon) as well. Is X-Plane sanity checking the horizontal resolution value?