Ghosted images appearing when using Magic Move

A very strange issue has popped up. I'm preparing a presentation for a client — it's an awards presentation deck — and after the nominees are presented, I use Magic Move to bring to logo of the specific award large and center, then it retreats back on the following slide which reveals the winner.

When the Magic Move makes the logo large, in the background being the logo, two other small logos (one of which is elsewhere in the deck, one that is not) appear in the background, perhaps at 5% opacity. As soon as I advance the slide, the "large" logo retreats to the position on the new slide, and the ghosted logos are gone. I didn't even notice it until my client pointed it out.

Anyone else encountered this issue? Any possible fixes I can look into?