Unkillable Drox + Desecrated Ground

I've had this issue on weaker characters in the past, and assumed it was a DPS check. But I'm currently playing a accuracy stacking LS jugg that deals around 25M DPS, and Drox + Desecrated ground is still out-healing it.
It seems to be stuck in that phase indefinitely, I took a video after around 5min of this:
https://youtu.be/9m2qQ7kNBo8

That's the healing from Consecrated Ground, it can be awful in combination with other map mods. Can you remember what other mods were on there?

Unfortunately I can't recall the map mods. I started the fight and quickly got it's health to half, then he went into the bubble phase and healed back to full and stayed in this state. The issue is that he never breaks out of the bubble phase, I even used Vaal Lighting Strike which is more then 25M DPS, and the health did not move at all.
For comparison this is a normal fight with Drox I recorded a bit earlier on the same character: https://www.youtube.com/watch?v=T9wO9-ON6dE

I just faced the same issue. Kinda sad to loose a fragment because there's a broken mechanic. My map was monster attack/movement/cast increased, Boss deals more DMG, consecrated ground and inhabited by lunaris. Drox moved on consecrated ground before going in it's bubble and he is now unkillable... Unfair, totaly.

An annoying workaround for this (assuming your helmet doesnt define your build) is to buy a random one with the eater/exarch mod nearby enemies have 100% reduced life regeneration.