Problem is in the mechanics of the wrathful heart - The Barber

Hello. Recently, while playing a party with another player, I discovered a bug. I played a barbarian and my friend also played a barbarian. My friend’s build uses an wrathful heart - The Barber. So, when he hits mobs, my damage to these mobs does not pass and, accordingly, I do not have a health boost for killing. This heart is not used in my build. I play through Walking Arsenal, and my friend plays through the Whirlwind. I think the problem is in the mechanics of the wrathful heart - The Barber.

This will be fixed in patch 1.1.1:

Fixed an issue where the Barber malignant power would absorb damage from all other players and not just the player with it equipped

Thanks for the support.