When Jack and Bob are horribly lip syncing on the sidewalk, Bob's red gloves appear and disappear from shot to shot.
When Holly and Jack are talking while eating pretzels, Holly sits down there is one little bite out of her pretzel. When the camera changes view there is a chunk out of the pretzel.
Around 1:18:55 Jack is walking on the narrow street and is passed by a masked woman. Clearly shows it was shot during pandemic.