Board Thread:Support Requests - Getting Technical/@comment-2170536-20130901071607/@comment-2170536-20140727065728

Just keep refreshing your browser or wait a few minutes. It is working, because I can see it. Your local copy just hasn't refreshed yet.

Also, one caveat is that the submenus will not show up in preview mode (custom JavaScript is not run there). So you will need to publish your changes, and then refresh again, to see them.