Darkness (Acolyte of Chayula ascendency point) seems to be bugged with DoT ticks

It seems like any source that counts as Damage Over Time (e.g. a blood or poison pool on the ground, or the little floaty blood orbs from mobs in Utzaal) immediately remove my entire pool of Darkness.

I've tested this by going back to Ogham Manor (level 15 zone) as a level 40 Acolyte, with 680 Darkness, and the little blood pools left by Blood Carriers first damages my ES, and the moment ES runs out my Darkness pool goes straight to 0. (https://imgur.com/a/p2T2EOf)

There are two problems with this: (1) Darkness is supposed to take damage BEFORE Energy Shield, and (2) I'm quite sure it's not intended for DoT ticks to immediately reserve the entire pool.

This is one of the least used skills, on one of the least-used ascendencies - so maybe this is how/why it's fallen through the cracks? Either way, it'd be very very nice if this gets fixed quickly.

Thanks!