As title implied, there is now a hidden bug that makes your infernal bugs out evading everything, BUT, he can inflict his AoE dmg. What that means?
It means that even if your Infernal evade all atks, he himself can inflict dmg through his AoE atks, meaning he can kill lowbies, and maybe lv 20 - , or better said: gold spammers.
How to do the trick? Well I got 2 screenshots for it:
a quick summary of it:
You, as the warlock need to summon of course first the Infernal. Just wait till he becomes unfriendly and starting rampaging. Then, you must hit him the very first moment when he is unfriendly, making him rampaging at you, and making him tapped to you. Then, you are able to banish him. Banish him as fast as possible because there are those stupid 70 pricks that gonna atk him...
Then, when you banished him, quickly run through the statue and jump there, see the picture above this text where you must stand, somewhere around that direction.
If everything is done correctly, banish goes of the Infernal, Infernal sees that you are on a statue and just stands where he is, evading all atks, but atking through his AoE dmg.
What the bug here is? Well, somehow during this midsummer festival things, you see those spooky candles around the statue. Maybe it's a bug and it's considered as a sort of "barrier" , making the Infernal thus unable to reach you, and when he can't aggro you, he just stands still and "bugs" out.
Now I don't know if you get aggro even when he evade atks, but as long as you stand there at the statue the Infernal just stands still and doing his AoE dmg. Somehow, a druid managed to take over the aggro of the infernal, but I don't know how he did it, but he did.
Have fun with this exploit till it's over ^^