I've been experiencing a very strange problem with the custom navbar block contributed by Michael Penney.
The problem is simple but I have no idea what the problem is. It seems the link text that should be taken from the section summaries sometimes are empty. I have found no comsistency to this -- sometimes it works and sometimes it doesn't. Please see the screenshot.
Anyone have ideas about solving this problem (would especially appreciate a reply from Michael Penney if you have time )?