I had a kind of funny incident. In fact, I have it still, since I can't resolve it. I traded with a settler to equip him with a set of combat armor and a missile launcher and when I exited the menu, I was surprised, he wasn't wearing the chest piece and it was neither in his nor in mine inventory.

Then I go outside the house where it was happening, only to see Sturges, sporting nothing more than a set of dirty undies and the combat armor chest piece. Where it stops to be funny, is that I can't make him trade. He just goes through his lines endlessly and repetitively when talked to. No option crops up. Anyone knows how to resolve this?