Thread:Project:Support desk/User editing problems/reply (2)

I merged all spammers into a single profile (Lacyvzblan) in order to delete them (Extension:UserMerge). Then I deleted the leftover spammer profile (Lacyvzblan). When I noticed the described problem for the others users I recreated the profile (Lacyvzblan) in order to unblock it but now it’s not possible to unblock. But when searching for blocked users the system tells me that the profile is not blocked.

I tried to unblock all users using both methods (single click and using #) but the problem persists. Would it help updating to MediaWiki 1.20?