Manshaum Narc Invincible Bug

Bug Name:

Manshaum Narc Invincible​

Bug Description:

When you get narc brishka to 50% health he makes a shield which you need to destroy before it explodes
If you destroy his shield while he is making it the boss bugs out and cant be damaged for 20 seconds.
Bug is related to this item, i do not know if it affects daily and weekly scrolls too. https://bdocodex.com/us/item/41619/

On retail you can damage this boss and kill him while he is making the shield, if you break the shield then boss should be stunned.
This bug has been present since boss released but no one reported it seems.​

How to reproduce/proof:

Summon boss, get him below 50% hp and wait for a warning on top of screen.
Hit him when message appears and he will not receive any damage any more.

​

 

Oh, this is a bug? I always thought that this is part of the boss mechanic
To prevent brishka from going into iframe, you either damage him as soon as you can and kill him before he gets protected,
or you don't damage him until he swings a second time at you (dmg him after that).

BTW, you don't have to wait for the whole 20 seconds.
Just stop damaging him, as soon as the text appears. After a couple of seconds (I normally wait until text fades again),
you can damage him through his shield.

 

yep yep i know about that workaround, but most people don't, you are supposed to be able to kill him even while making shield.
If you mess up while he's shielding you will have to wait 20 sec, happens when 1 skill can bring him down to 50% when we grind lv 70 with high gear....