Josh Rowntree of KDKA captured the post before it was deleted:
He's also dealing with a knee injury and missed Pittsburgh's win Sunday over the Cincinnati Bengals.
Steelers head coach Mike Tomlin said Tuesday he didn't have any significant updates on Smith-Schuster or running back James Conner (shoulder) as they prepare for a rematch for the Browns on Sunday.
"I don't know what their status will be as I stand here," Tomlin told reporters. "We'll go through our normal procedures."
Neither Smith-Schuster nor the Steelers have commented on the Instagram video.