Ran elite VON2 recently at level. Was super easy to complete since I could effect mobs with spells thru walls. Have played a bit with this bug. In the long run it actually often helps players out more. I could drop spells on mobs behind walls and doors and do other things. I never put much credence in the cynical comments that "Turbine jumps to fix bugs quick that only help the player." But in this case, that seems pretty true.