ToME: the Tales of Maj'Eyal

so, having a ring of invisibility, I decided to see what happen if I let my hp go down to 0 wearing it...

I found out you do not die... however if you get hit by anything (even if it does 0 damage to you) you do die.

now I can't decide which is the bug...

is it the not dying upon reaching 0hp due to invisibility ring? (probably) (lets just say it would be like a ring of power consuming you and you are a wraith from then on )

or is it dying by a 0 damage hit? (probably again )

No bug IMO

It lets you stay in a state of near death but even a breeze of wind wuold kill you

but what if you are immune to that wind