Nostalrius Begins - Quality wow vanilla realm (1.12)

Well I already see the reactions to this one:"Fishing?! Who the hell cares?!" but I think it's a bug so it should be reported... I think it has somehow to do with the fishing quests. If you get a fishing quest, you get a "double catch" if the quest item drops. But if you have turned in the quest suddenly you always get a "double catch" (at least in the area of darkshore), but that's a bug, right?