Orc Unit in Front of Dead Man's Chest is Unattackable

[fastjaw24]

Just what the title says I get the dual clashing swords that I can initiate combat but when I click on him my guy just runs up and stands there. Just curious if this is intended cause you have to find a quest to battle him or its a bugged fight. I have cleared almost all of Eastern Island so pretty sure the quest is not there maybe I will find the quest on the Western Island.

Thanks for any help with this in advance.