Before applying the patch Do run grunt css . Confirm you get the following message in the "stylelint:scss" task: >> theme/boost/scss/moodle/grade.scss >> 455:19 ⚠ Unexpected unit length-zero-no-unit After applying the patch Do run grunt css . Verify no error is given out reminding you that 0 values should have no unit. Verifying the testing instructions of MDL-74297 still do apply Setup Restore the attached course Confirm there are at least 20 students enrolled On the course page, add enough blocks to trigger a scroll in the blocks drawer Testing Log in as an admin Go to the course page Confirm the start of the scrollable content is the content of the page without the primary navigation The scrollbar should start below the primary navigation Reduce the browser width to half Open the blocks drawer(it should open in a floating drawer due to reduce width) Confirm the scroll on the page has disappeared. Confirm you can scroll within the drawer. Close the drawer Confirm the page scroll is visible again Click on the Grades tab Confirm the 'Overall average' bar is displayed at the bottom Scroll down the page Confirm the header becomes sticky at the top of the page below the primary navigation Classic Log in as admin Go to the course grades page Repeat #11-#13 Repeat test on available browsers - Chrome, FF etc and in Mobile Views