Acidic concoction - mechanic

Question is about how new pathfinder's acidic concoction works. Am I right that it:
1. Removes ALL poison stacks from enemy
2. Deal additional damage depending only on HIGHEST REMAINING DAMAGE stack?

True, my understanding was that the intended behavior should be to "consume all poisoned stacks and cause damage equivalent to the cumulative expected damage of all stacks."

However, the current actual behavior appears to be "consuming all poisoned stacks while only inflicting damage equivalent to a single poisoned stack."

Furthermore, it remains unclear whether this Layer 1 is indeed the layer that deals the highest amount of damage.

feels bad :(

Yeah it only deals damage of one poison instance.

What koners wrote seems to be true tho. If u have multiple poisons on the target, it doesn't seem to use the highest poison damage necessarily.

I have no idea how it determines which stack to use for the damage calculation, maybe it's the one with the most duration left.

So far it feels pretty weak tho.