Navigation links not working on mobile preview

Hi, I am following the Become a Rapid Developer Learning Path and I have just created Navigation Items, linked them with their respective existing pages (Event > click on action > page ). I published and updated it without errors. On the Tablet and and Desktop Preview the links work fine and I can navigate from the Navigation Items to their respective pages. On Phone Preview as well as scanning the QR code to see the app, the Navigation Items are not responding when I click on them.  Any ideas what could cause this? Thanks, Emma
1 answers

I’m adding this as an answer, because I don’t think  this is a config issue in your app. Even if you use the completed "Become a Rapid Developer" LearnNow app supplied in the course, the menu items don't work on mobile…

Is this possibly a bug?