It fails alot of times eventho the target is in range, view is not occluded and target doesnt have an aegis buff (which should not be relevant since its supposed to be fixed but people say its not fixed). It feels stupid playing this game when so many spells actually dont work or are so bugged that theyre not worth using.
Seriously this game is 3 months old. Warhammer Online was dead after 3 months. Anet doesnt have time to waste.