Portrait display can't be positioned to the left of landscape display
I have two displays, one (DP-2) set up in portrait mode to the left, and one (DP-1) set up landscape to the right. When I try to reflect this in mate-display-
It looks suspiciously like the application is behaving as if DP-2 is in landscape mode, for the purposes of moving it, as the distance between the top-left corner of DP-2 and the edge of DP-1 is the same as the long axis of DP-2. (In fact, I can move DP-1 to overlap with DP-2 in a way that confirms this -- see screenshot 2 which I will attach after posting).