Let me rub salt upon wounds, here is the pull in question https://youtu.be/Kk1K_PkXCu0
Pardon me shame of clicking some skills with mouse, old habits die hard.

As you can see, the pull went fine and i had more than half my kit for the next pull. Healer was attacking almost entire time.

"double auto attack" mobs arent anything new to the game, they've been present for all its history.