Angela2013
Well-known member
I can't replicate this. I am showing Chain Shirt as correctly having a 20% arcane failure rate, are you sure you aren't looking at Chainmail? That is a medium armor with a 30% failure rate.
Furthermore, my tests show the percentage correctly decreasing by 10% when adding the Mithral material to a custom magic armor.
For me it is only happening with the chain shirt. For other types of armor the mithral works fine and the arcane spell failure is correct.