Pretty sure that is just his comfort level, more draw the play in the dirt and street-ball it. The skill is there for hitting guys from the pocket, but he will have to learn to read the defense and throw the ball to the right place, which is harder than scrambling and all receivers break their routes and start running parallel to you.
Fairly common for QBs that are talented, but have a lot development work needed. He will take a lot of coaching up, but the talent is there.