Flame Core from Machinarium NOT increasing flame resistance.

I fought the Remnant boss and got the Flame Core. When I pulled up my character sheet, my fire resistance was at 69% (Max 80 due to a +5 from an item) and it didn't go up when I used the item, though it should have jumped to 79%.

Is it possible that this item only works on Cruel if you got it on normal? It's possible I missed the boss. I'll be checking tonight.

OOps. Wrong Forum. My bad.