I have found out that it is Compiz that is at fault here. When I switched desktop-effects off, the screen reverts to normal blue borders. when switching to 'normal' or 'extra' the borders go red again.
-- themes not working right https://bugs.launchpad.net/bugs/197596 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-themes in ubuntu. -- desktop-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
