On an installation with a couple of categories, sub-categories, and courses in categories: Navigate to the ajax settings Disable 'enableajax' (25 and 26 only) View the frontpage Edit settings to show the 'Combo list' and 'List of categories' View the front page Confirm that the Collapse/Expand all links work Confirm you can expand/collapse the lists Edit the front page settings Change it so that: only the "List of categories" is shown The category depth is unlimited Go back to the front page Confirm that the Collapse/Expand all links work Confirm you can expand/collapse the categories individually