Im still having this issue and Im not understanding the fix. I read the thing in the config file about display table but I still dont get it.
If there was a simple fix to make it so the center monitor would be the correct one in game that would be amazing. My workaround is to set my left monitor as the windows main monitor and then it displays properly.
I havent seen anyone show an actual fix for this, just posts about it being incorrectly configured but I cant seem to figure it out either.