There is no sign of any error.
Thank you for report with video! I verified this particular case and it seems that Mishule sent you incomplete (empty) set. It only contains this "description" without actual items. It is currently not so easy to track and manage items attached to sets - we know about this and want to improve it (including set editor etc.).
Oh, it makes sense, I usually receive items with sets.
Customer support service by UserEcho