HHK pathing
 

Been hunting here for a long while now, and just recently (When all the pathing problems came up) mobs along with my pet have been falling through the floor and aggroing the nobles/bards on the second floor from the third floor. I haven't seen anything from floor 4 come down to 3, it appears only mobs from floor 2 are aggroing up.

Forgot to mention, pet is going through the walls. The mobs have also done this, though not as often as the pet.