Once every few times i've had this happen to me before. You guys remember the beginning buffs/debuffs the enemies cast on themselves right (ZPCI Sniper, ZPCI Medic, The Council, Guardian Cannon, Orb of Restraint, and Orb of Sanctuary.)? Quite rarely, i've seen them cast those abilities on someone else. I was fighting the corruptor and i saw that the orb of restraint and sanctuary casted both "Flawed Design" and "Perfect Design" on the corruptor. Making it heal life and lose life and making him take tremendous damage at the same time. I've seen the guardian cannon cast "Duty" on the mayor. I was wondering if this has happend to anyone else it seems very odd.
*Also i've seen the baron use Tick-Tock and echoed screams on himself before.
Sometimes enemies have targeting issues. Felicity has cast Shadow Blend and Blade Dance or whatever it's called on me before, and I've heard about the Baron casting Tick-Tock on himself.
Yes it has, as a matter of fact, it also works the other way. I had 300 and something hp, and roald attacked me, but he went to attack the baron, and when he was on the other side, it affected my health. So, yes. It is a recurring problem.