Forum:"Special : Categories" is empty since Mediawiki 1.13 update

Special:Categories says "The following categories contain pages or media." But the list have no entries. You can select next 20, 50, 100 and all, but allways no category will see. — anonymous 09:29, 10 September 2008 (UTC)
 * For some reason only categories added since the update seem to show up: wowwiki:Special:Categories. 09:58, 10 September 2008 (UTC)