This is a longtime tracking/positioning issue since his days at Arkansas. This is why athletes get overrated annually. If you attack at the earliest point away from your frame and position your body in anticipation to turn away from the defender, you can shield the defender from the ball with your back and your reach. Burks can leap, but he doens't know when, how, or why to position his body. The best WRs know how to position their frame and extend first with the arms before leaving their feet. Usually if they jump first, it's a tracking issue -- they don't find the ball fast enough or have an ingrained plan.