Prey of the Hunter:
Barrier Poping up in prey when the first person gets to the chest locking out the rest of the party.
Walls/Floors randomly not Breaking in this quest.
Reavers Refuge:
Invisible Enviromentals.
These are the kinds of things that really drive me and many other folks crazy. This stuff needs to be patched.
also, not being able to put in a Ticket from inside a quest needs to be fixed asap as well.