I put the armor on Gale (after the medium armor feet).
The hover over AC shows 12 from Armour +4 from Barkskin +2 from Dexterity, but the total shows as 16 (not 18).
[img]
https://imgur.com/EqieRSf[/img]
[img]
https://imgur.com/CvcZbh9[/img]
I felt that the 16 was "too good to be true" so I'm not too hurt by it, but it's not correct.