A method includes: upon opening a target communication window, displaying a first subset of communication items target communication window, without concurrently displaying a second and a third subset of communication items in the target communication window, wherein: the first, second, and third subsets of communication items have been received after last closure of the target communication window, and the first subset is received after the second subset, and the second subset is received after the third subset; in response to receiving a second user request to display earlier received communication items and in accordance with a determination that the second user request meets predefined list rollback criteria: ceasing to display the first subset of communication items in the target communication window; and displaying the third subset of communication items in the target communication window, without first displaying the second subset of communication items in the target communication window.