I'm using Windows 10, and what I think is the newest release of 2.53.
Basically, if you walk on a Zelda tile in a room with a Guy (in this case, it was Zelda, though I don't doubt it happens with others as well), the guy will not disappear with the rest of the room, and will continue to be onscreen (with the exception of the lower half of the guy itself, which is overwritten by Zelda's sprite holding up the triforce) until it scrolls offscreen with the rest of the screen. The same goes for the fire that appears with the guy.