Some applications may not support the primary option yet, so I do not think that this a bug in xfce4-settings which just enables it (equally to xrandr --output <display> --primary).
https://bugzilla.xfce.org/show_bug.cgi?id=8328 If possible, please test with Xubuntu 18.10 (dev release). ** Bug watch added: Xfce Bugzilla #8328 https://bugzilla.xfce.org/show_bug.cgi?id=8328 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1769247 Title: xfce4-display-settings "Primary display" option does not work properly To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xfce4-settings/+bug/1769247/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
