I've retagged a few questions on SO lately, but the activity tab only displays the last retag (as
revised). That means that everytime I do a retag, the previous one just disappears.
Is that intended? Is that a bug? It seems that the behavior changes along with the reputation: I just have retagging rights, whereas users with editing rights do have a more detailed list of recent retaggings (see Jon Seigel's answer and comments).