Level 80 quest, started of fine, managed to get this boss down to half health then all of a sudden it bugs and hes invulnerable, i cant hit him with any moves, and all he is doing is floating about in the watery bit in the middle…..SERIOUSLY this is a simple boss fight and its bugged!!! Its bad enough you cant clear the lvl 80 zones as most of it is bugged and now i cant finish the main quest line… unacceptable to be honest. All that amazing work for what…its all pointless if people cant finish thekittengame…very disappointed gw2 player…fix this please.