Same issue with wizard and trash mobs. Only thing I can do is decreasing the trigger range. Most common on Catacomb type of maps.
Same here. Already said this here.. The bot dies or just disconnected.
I.e:
Bot Die - He is surrounded by mobs, does not attack because he is trying to go to some elite, quest mob, chest, corpse or destrutible that is ahead. And die by mobs that are surrounding the bot.
Disconnected or Loses the quest for gold inactivity - The bot trying to kill the mob behind walls, doors.. Unsuccessfully of course.
If have any logs to prove it, let me know, I will activate. Or just do Act 1 Bounty Sycothix and watch for a few hours.