There might be the same issue that was when Tradu Mines were released: you couldn’t use a lv20.25 weapon at level 20 so that cap was increased. Maybe the cap is now lv21 and Riley forgot to increase it at 21.2?
That extra 2 damage is definitely due to increased strenght.
…I would totally never forget to do something like that.
On a totally and completely unrelated note, check now, I think I fixed a “bug”. It should be fixed in any instances (e.g. dungeons, raids) and I will do a server restart to roll it out everyone here in a bit.