• Although the Ignited Berserkers despawn (like normal summons), Ignited Revenants and Aptrgangrs do not despawn (even if you walk far away enough/teleport away, which should despawn summoned mobs), which is annoying if the player has to do some other things especially since they just teleport to you.
• Summoned Draugrs, Royal Draugrs, Elite Draugrs, and Aptrgangrs attack villagers and iron golems unprovoked (not sure if intentional or not)
• Player that summoned the Revenants can still take damage and be blinded by their breath attacks despite being the one who summoned them
• Revenants take fall damage for some reason despite being able to float (normal ones from cataclysm do not)
• Summoned Koboldiator doesn't animate sometimes while attacking enemies, just sort of walks up to them and they take damage.

don't forget in some cases they will attack and murder there summoner T~T