From Morloch Wiki
Patch 4.6.0 is a cleanup patch from the larger mob AI work performed in 4.5.0.
- Errant Fury's now correctly hit mobs with AoE's.
- Resolved issue causing mobs under rare conditions to not remove correctly after death.
- Resolved mob's not respecting immunities (Powerblock, Stun etc) - This will be used in R8 Encounters.
- Resolved non-looted mobs being considered a target for AoE's.
- Improvements to the Worldnode portion of the code (Performance)