Incorrect masteries Tooltip [CLIENT]

When maxing out all 30 mastery points, I come across this incorrect tooltip: "Require 12 points in Cunning". Technically, I had 18 in Resolve, and 12 in Cunning, so the real reason why I can't acquire the Keystone is not having enough mastery points, not the fact that I still need 12 points in Cunning.