Chaos Inoculation and Berserk causing random death

I am running Chaos Inoculation Keystone which make my Hp 1 and having Berserk Spirit Gem activated.

I randomly "die" while in combat despite my ES is overcapped and my Mana is full (running Mind Over Matter to make my mana take dmg instead of my hp).

This "die" state is different that it is only my hp is 0 and the rest of my stat is normal, ES is still full, mana is still full and I COULD MOVE AROUND in a rather buggy way and I can still continue with trial in this state, taking stair and reward and go to next room. (my WASD will move my character but i dont see walking animation, just my character teleporting to the direction of my WASD keys). Also, monster could kill me in this "die" state and make the death window pop up prompting me to resurrect at check point

What also make I think this is a bug is because of the inconsistency. If Berserk Hp drain can drain 1 hp from a max hp pool of 1 then I should have died instantly all the time. Instead, I die 1 time every 4-5 chaos trials I run.

I hope I get an explanation from your team at why I died and is this a bug.

Thank you