Traits active but not highlighted

1

Hello. Been working on the quests lines for all the different areas and noticed that the traits on the quest line called Look for signs of Gloom Leaf. The Treant - Fey/Elemental had a trait active called Stoneskin even though it wasn’t highlighted. I was only doing 2 damage with skull hits and the trait was greyed out. It is the third trait on that troop.