Indeed, according to bodhi history:

https://admin.fedoraproject.org/updates/FEDORA-2013-17055/qt-4.8.5-8.fc19

Looks like it got autokarma'd for stable while push to -testing was underway, and that confused things.

Now mediawiki-1.21.2-1.fc19 as well.

qt-4.8.5-8.fc19 is now tagged into f19-updates. mediawiki-1.21.2-1.fc19 looks good as far as I can see, there might be only a mirror sync delay:
http://kojipkgs.fedoraproject.org/mash/updates/f19-updates-130922.1701/f19-updates/i386/

All in order now, thanks!