Throw a window.console.log(nodes) in the render function in ajax_response_renderer.js Add the nav block to the dashboard Expand 'Courses' and then expand one of your test courses Now, in the console, check the first child of the most recent object (this is the course participants node) and observe that the class is listed as 'type_container'. Now, load up clean theme and go to the navigation block and click the 'Participants' node in a course so that you're redirected. You should see the block still present on the page, with the Participants node expanded. Now, using your browser dev tools, search the dom for 'type_container' and verify that you see that class on the participants <li> element. On an unpatched branch, this is marked as type_unknown, so feel free to compare this to stable branches to confirm this. Run the lib/tests/navigationlib_test.php unit test and confirm it passes.