I noticed the exact same thing but I don't think it's that big of a concern as it should be addressed as he moves along. He's simply trolling the top of the blueline hoping for a good bounce or a puck to break free for a rush the other way. You can get away with this over and over again in junior with great results. Pretty common mistake for offensive youngsters. Unfortunately in the NHL that will often end up in the back of your net.
His positioning is a bit weird as he almost drifts to the center position. Again, looking for that puck in an opportune spot. From what I've seen if he does get it there he is still a good threat because of his shot.