I use two screen configuration each of monitors has its own resolution - 1920x1080 and 1366x768. Unfortunately, if the second screen is activated the game is trying to use both screens, so it is become impossible to play. I always turn off one screen by "xrandr --output VGA-0 --off" command before start Unity of Command , but I think that is not right and could be considered as a bug.
I believe that it is not a major issue because there are not so many users who use 2-monitor system, but as a game is a commercial product, I ask you to provide me a TT number you've opened for this issue.
Regards,
Viktor.