Create a course. Add a few gradable activities (enough to have a horizontal scroll on the grader report page). Enrol a few students in the course. Go to the Course. Go to the Grader report (Grades > Grader report) Start scrolling horizontally on the page. Confirm that the user name column is properly pinned (sticky) and the content within these cells is fully visible. Open the course index drawer. While the drawer is opened, start scrolling horizontally on the page. Confirm that the user name column is properly pinned (sticky) and the content within these cells is fully visible. Close the course index drawer and reduce the width of the screen below 767px. Start scrolling horizontally on the page. Confirm that the user name column is properly pinned (sticky) and the content within these cells is fully visible.