I was testing something in Offline PTR with Ubers (i can only guess it would happen online as well), and all 6: Izual, Duriel, Lilith, Baal, Mephisto, and Diablo all hyper focused ONLY my mercenary unless:
- the mercenary was off screen and had no choice but to fight me instead, or
- the mercenary died and now had to focus on me.
I tried this with various weapon types, even having the left click be throwing with a sword to not attack, as well as with the normal attack active, but all 6 ubers would bypass my character and go straight for the mercenary. I could teleport away to reposition and try to get between my mercenary and the uber, however the Ubers would still strictly focus on the mercenary, especially Baal who would teleport onto her, not allowing them to move and have them killed. This happened with all 4 different mercenaries as well, not exclusively to act 2 or act 5 mercenaries.
Please fix this bug!