I feel it’s only certain aoe attacks that trigger this. I made my friend aware of what happened and I watched for it. Their pup started hitting the Dark Father, then switched to hitting me with no prompt from them.
Reading this thread reminded of another incident.
This time it was with my spellweaving cu and a rising colossus. This was in the Abyss at the mini champs. I know I did not target any of the RC but my cu on several occasions started to fight them. I even went off to the side and fought spawn away from the RC and when one got close enough, my cu went after them, no call from me to attack.
It has to be something. I’ve seen it all along but only recently realized that it wasn’t me.