However, "beverages & bread" quest (more precisely, quest named "Visiting the Tavern") does not require dwarven goods to be completed, you produce beverages and breads in workshops. We all still have that quest as well. This might not be considered as a bug.
This quest should indeed not be a bug, or unwanted, if you read the whole text you'll see it fits perfectly in the story.
The dwarfs left our cities, because they can't get along very well with fairies, but the quest-giver was nearby, so he comes by for a short visit.
Being involved with fairies doesn't mean that the dwarfs don't like us now