I think tall TEs are great for jump balls but they can struggle with lower balls while TE is in motion. Squatting, falling, reaching low - these can be problems. Smith was in an awkward spot for a low ball and Andrews was falling backwards so when ball hits him his body is moving back and away
I also think (looking at play in slo-mo) that Andrews (6' 5") couldn't feel the ball. The ball skips off his gloves and into the hard chest plate (kick returners are usually flat chested since pecs can make a ball bounce). Then he's looking around and grasping blindly. I don't think he really felt the ball on his hands or in his chest. Its known that some gloves ran reduce sensitivity even while increasing tack.
Andrews had dropped another pass earlier and he had ball punched out for a forced fumble. Buds hands weren't in the game