Log in as an admin Browse to a course that requires scrolling to get to the bottom section. Turn on editing Scroll down to the bottom section and click to add an activity. Check that the dialogue is displayed correctly and that your scroll position remains. Click cancel Repeat the above step and check your scroll post stays the same still. Test the above in standard + clean (at least those two) Select to edit the settings for the course. Open the file manager, check it is displayed correctly. Edit lib/ajax/getnavbranch.php and add a coding_exception to line 35. Try to expand the courses branch in the navigation Check you get an exception thrown. Repeat in supported browsers, including mobile browsers.