Board Thread:General Discussion/@comment-29971813-20170321215009/@comment-24258073-20170328063100

Tupka217 wrote: No, renaming doesn't unblock you. It's still the same account with the same contributions and rights, just with a different name. It depends. In this case it wouldn't, but if the user hasn't actually joined the wiki, and their account is renamed, then the block will not be moved over to their new name, and thus they would be unblocked.

I've experienced this with blocking a couple of users on a wiki I am a bureaucrat on, to make sure they couldn't edit it, but one of them got around the block via account rename, and it was only after I'd blocked them for socking that I realised that was actually the same as one of the accounts that I had previously blocked.