The bonus to touch AC given by the Armor Master fighter archetype doesn't seem to affect characters' touch AC. The attached character should have 14 touch AC (10 + 1 DEX + 2 natural + 1 bonus from the archetype) but has only 13.
Touch AC is 10 + DEX + Deflection + Dodge… Natural AC does not add to touch.
Feature is working as intended. Touch AC for test character grants a +2 from the Deflective Shield, and +1 from DEX granting 13 Touch. Changed to Human (DEX +2, DS +2 for 14).