When Mannix is standing at his desk in his office, he's holding a manila folder in his hands and is leafing through its contents. The camera then briefly switches to Peggy and then back to Joe but the manila folder has completely disappeared as it's not in his hands and not on his desk anywhere.
When Joe is talking to Mrs. DeMarco at her house, she is seen mixing her cocktail with an olive that's on the end of a toothpick, and initially both the toothpick and olive are in her glass in the shot of her taken from the front. Then right after that, when the camera switches to a shot of her from the back, the olive and toothpick are now no longer in the glass but are in her right hand about a foot away from the glass. When the camera then switches back to a shot of her from the front, the toothpick and olive are in the glass once again. Then right after that, in another shot of her from the front, the olive has disappeared entirely and Mrs. Demarco is now holding only the toothpick in her right hand about a foot from the glass.