I've started having this issue on one squaddie - and only this one squaddie so far - where randomly, in the middle of a mission, he will refuse to use any adjacent cover. I move him from one piece of cover to another, and he stands there like a goof. Fortunately, he's a support, so it's not TOO big a deal. Does anyone know what might be causing this?
It's worth noting that the second time I noticed him doing this, I moved him away from cover, then back into cover, and he resumed ducking behind cover like his squadmates.