I was on EE House of Pain end fight, all trash cleared and only the final boss remains, so when my Paladin was fighting him, he goes through a wall in NW corner and was unreachable; even NPC still try to fight him but with no result. I put a ticket and for the first time in my life, after waiting for two long hours (that was my option, I'm not uber and doing EE is a challenge for me) no GM answer my ticket (call me lucky but the other few times I submitted a ticket, it was answered in less than 15'!)

I also put a Bug report on this, so try to fight the end boos far away for that corner!