Ah, there's the problem. The "On-Block Chilling Shield" state connected to the Stormight Shield has the icon for the Ice Element- which of course is the same as Chill.
Also, I worded the Stormight Shield's effect badly- it should be "inflicts 10% Chill on non-Burned attackers".
Terribly sorry for the confusion. I'll change the icon and text next patch.