[1, ID500] Damage Smearing tooltip inaccurate

[Parcae2]

I was fighting Atamathon earlier, and I noticed something weird. I had about 70% temporal resist, which normally means that the amount of damage displayed by the tooltip is reduced by more or less that amount (minus the enemy's damage piercing). Instead, I was receiving about 50% more damage. I don't know if the tooltip or the damage was wrong and, if so, why, but I'm cross-posting this to the ID500 thread as well.