One 'problem' I ran into is that when you complete tasks before you accept a quest: Like upgrading and enchanting your gear. And you accept the quest afterwards it is not completed immediately.
Had the same problem with building the workshop but I built it yesterday and the quest was completed today.
 "Game of Thrones Ascent"){kind=icon}
 "Sword & Magic"){kind=icon}
 "Talesworth Adventure: The Lost Artifacts"){kind=icon}