Use 2 Moodle instances, one based on the integration branch including this patch, one on latests master. In both instances take these steps: Login as Admin Create a course C1 Restore the attached backup to course C1 Compare the restored book page by page with the other Moodle instance Verify  the book content looks the same on both instances Verify the JS functionality works for: Alerts (dismiss), Buttons (remember state), Carousel (slide), Dropdown (show menu), Popover (show popover). Please note Tooltips are not functional.   Check if there are no sass parse errors in your apache logs Login as Admin Navigate to Site Administration -> Development -> Debugging Choose Developer.. at Debug messages Tick the Display debug messages checkbox Open a console showing your web server / php log files Navigate to Site Administration -> Development -> Purge Caches Navigate to the Site Homepage Wait for the page to load and rebuild caches Check the log file for errors Test if the CSS compiled correctly after the hack for badges were removed ( MDL-65761 ) Login as Admin Navigate to the restored Book activity On page 2, Badges, hover over the badges after "Test for badge hover status" Verfiy you do not see a link underline when hovering over the badges.