Relic Quest Hydra Bug.

So after I had gotten a rag-tag group of adventurers together we headed in to defeat the Hydra, upon going into the instance one of our members disconnected. We believe this is what caused the instance to bug out. When it bugged the hydra only did his phase 1 attacks until we downed him (not that we were complaining). Then we were stuck in the instance, it was acting like it was still going on until someone relogged, it said "Duty Commenced", and we all exited with credit for the quest. Needless to say we got a big laugh out of it and parted ways to turn in our quest! So I thought I would report this bug.