Could you try if that's still an issue in 18.04 or 18.10? Some of the rules have been relaxed (I think in 18.10) which should fixes some of those issues. Also does gnome-control-center display any command line warning when hitting the bug?
** Changed in: gnome-control-center (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/1750136 Title: Can't move displays when changing orientation To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1750136/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs