People turning pets grey then releasing them, so your new grey pet doesnt attack them. Many and I mean Many areas that you cannot walk thru but the mobs can and you get trapped. Players casting area spells that agro eveil critters turned good (visa versa) pets falling thru moon gates like used to happen as ways to get scripters. Insanly poor AI where, attack mod does NOTHING! Corrupted Hearts Count not working. Players attacking critters, shouldn't be able to like pets in tram. I am sure there are more I have not yet experienced but If you hit them make sure you are filling bug reports in game and I am sure you can here in the bugs forum also. But just file them.