Can we fix 'Adaptive resistance' before 3.28?

I've played a Rakiata's Dance build 3 times in the last 2 leagues and I'm so confused why this mod behaves the way it does;

for those who don't know;

Adaptive Monster Modifier: Grants +#% resistance and +#% maximum resistance matching the highest damage type taken (Fire, Cold, Lightning or Chaos) from a hit

And this is what Rakiata's Dance does: Treats Enemy Monster Elemental Resistance values as inverted

Why does every mob that has this mod feel like a tank no matter what. I've played 150% pen builds, I've played Rakiata's builds, and I've played 'nearby enemy to fire dot is -20%.' and I've played Inevitable Judgement from Inquis

What the hell does this mod do that isn't known by the community?