Nostalrius Begins - Quality wow vanilla realm (1.12)

I assaulted mine twice earlier today, did not get quest credit. I assume it's also bugged for the other 3.

http://www.wowhead.com/quest=8105/the-b ... athi-basin
(On a side note, this says Added in Patch 1.11.1, shouldn't this not even be in the game atm?)

No it should not and will probably be removed just like NPCs for faction reputation quests.