Anyway, mystery solved. Thank you!
(I could have sworn there was no tag!)
I suppose the video speaks for itself, but sometimes an umpire anticipates what will happen. Modern players, especially stars, frequently go casual; not running out a play, one-handed fly ball catches, etc. An umpire sees a runner in this situation slow down and ‘give up’, allowing himself to get an inevitable tag. Sometimes the ump will call him out even if the tag is not actually completed.