Toggle primary output

When I go to Display Configuration in System Settings I see stars on my two displays. I will click one of them to make it yellow (it says “Toggle primary output”) and then hit apply. After I close the display configuration and go back the star is not yellow/highlighted anymore and it did not accept the previous selection. I have to disable and then re-enable my other screen in order to switch primary outputs. Anyone else having this problem or am I doing something wrong?

openSUSE 13.1

System Settings? Does that belong to a desktop? When yes, please which one (KDE, Gnome. XFCE. …)?

Yes, using KDE.