It's working fine for me, I suspect kbeeveer46 doesn't have extras-devel enabled in the app manager.

I see lots of packages found with the same version number as the one I have installed in both extras-testing and extras-devel. It would be great if we only see them once in extras-testing, so we can filter them out with grep -v when looking for shady extras-devel packages.
So basically I want to show only those packages which are found only in extras-devel, and not in extras-testing or anywhere else. Can you think of any simple way to accomplish this?