After extensive testing, here is my understanding of the Fire Resistance Bug:
Burning Pearl is worth 100% FR.
Ring of Fire is worth 100% FR.
Red Dragon Scale Mail is worth 75% FR.
Elemental Armor is worth 50% FR (as well as 50% CR and 50% SR).
Three of these items work correctly. All will add FR to each other. Burning Pearl has an additional bug, see below.
The following items will offer 50% FR individually, but will add no additional FR if added to any other one of these items ["Norfleet's rule" = two or more 50%'s will add nothing -- with the strange exception of Elemental Armor, above]:
Fire Brand
Flambeau
Dragon Helmet
Charcoal Shield
Fire Plate
Staff of Elemental Mastery
Sword of Justice
Ember
Rober of Callius
Amon Hotep
If any of these items are paired with Burning Pearl, they will add nothing -- another strange quirk.
If the developers can find out what makes elemental armor work, that may be the key to fixing the other items.
