U24 consolidated both resist buffs into a single "Armor" buff, but the trait labeled "Armor" on Alchemy reagents only increases your Physical resistance. There remains a clearly labeled "Increase Spell Resist" trait, which works as advertised, but it still has the same UI icon as the Heroism trait.
I've always loved the Alchemy system in this game, it would be great if these issues were cleared up!
PC/NA || CP/Cyro || RIP soft caps