When Carrie is in the hotel lobby talking to Alex and his daughter, the same woman passes behind Carrie three times, in the same direction.
When Carrie is in the pastry shop, we see a long shot of her sitting against a three panel screen and her table is at the end panel, with no table next to her. When we get the close up of her, with the dog sitting next to her, her table is in the middle of the screen and the table next to her (with the dog) is in her original position.
In the scene when Aleks and Carrie are talking by the bakery in Paris, Carrie is holding a pack of cigarettes and a cup of coffee. However, the cigarettes go from being on one side of the coffee cup to the other, throughout the scene.
When Steve's mum, Mary, goes missing, Miranda rushes out of the house to look for her, grabbing her coat and scarf on the way out the door. She has her scarf over her shoulder and is pulling it around her neck as we see her exiting the house from behind but when we see her from the front about to go down the steps she is pulling the scarf around her neck from a different position.
Both of Harry's hands are on the table, but in the next shot his left hand (with his wristwatch) is up, then in the next shot both are back down. He then raises his right hand while his left hand remains on the table.