War Scream Triggering Lifesteal

So i was casually doing a guild war when i was at low health, but i got a good position and i warscreamed mobs through the walls
Then i realized i suddenly went up to full health
I can't show any proof because i don't have a video program or something, but you guys may should try, because this could make warscream a quick health potion that uses mana, and this would lead to warrior using Heal without even being supposed to...
I don't have proof, but you guys can try by yourself, because i know pictures wont really help

 

This is indeed an existing glitch, I see this being one of two things
1. (most likely) A glitch getting fixed with the coding update
2. (unlikely) They want it to be this way and might add something for other classes too, like for multihit and arrow storm.

 

Its because of how War Scream acts as melee hits.