I logged on to PTS a couple of weeks ago and this achievement popped up for me there, so my guess would be that it has been taken care of and we just need to wait for the changes to be deployed to the live servers with the next patch but no confirmation or guarantees so don't get your hopes up yet, let's just wait for the next patch.
ZOS_GinaBruno wrote: »Hey all, apologies for the long delay on getting this issue fixed. Wanted to let you know we are working on getting your accounts fixed so the achievement will be properly granted. We don't have a set date yet, but it is being tracked for a future patch.