I'll try to stay spoiler free..

So I have Arcade in my group, and after his quest-line where he keeps initiating a conversation after each sub-task is complete, I try to give him some stuff to lug around.. and.. No companion wheel comes up when I 'engage' him. It goes directly to a conversation panel, and even in that panel when I select the option to open his inventory, it does nothing. The other commands seem to work. Any thoughts, or is he just gonna be power-fisting things from now on? (....Ew.)