Assumptions A course containing a forum with the following settings: Whole forum grading > Grade: Point The forum contains at least one post Test Login as the site admin user Navigate to the forum Press the Grade users button Click on the 3 dots button at top right and then choose Toggle full screen Click on the View discussion link Verify that the conversation is displayed in a modal and that the main screen content appears to be dimmed Exit the modal by clicking off of it Verify that the modal disappears and that the content is no longer dimmed Click on the 3 dots button at top right and then choose Toggle full screen Verify that the modal is not displayed Click on the View discussion link Verify that the conversation is displayed in a modal and that the main screen content appears to be dimmed Exit the modal by clicking off of it Verify that the modal disappears and that the content is no longer dimmed Repeat this test for all supported browsers.