Achievement completed without doing the addy.

Achievement list / Missions / Ali Baba and the Third Thief -> Against all Odds
==> This achievement is showing as complete but I never did this addy...
My other achievement in the Common tab / Arabian Knight shows that as pending to certify I didn't run that addy.


Is it just a visual bug in the Achievement list?
If I do the addy and follow the Against all Odds requirement, will still going give me the bookbinder tribute?


Help!
I need that bookbinder tribute.
I'm a new player, didn't complete a year playing it, yet.