Ionic v2 App freezes in Windows Phone 8.1


I am new to Ionic and have tried building a very simple app in Ionic 2 with a home page, about page and a button on the home page that opens the about page.

When build for Android and side-loaded it works fine, however, if I build for Windows and deploy to a Windows Phone, it loads then freezes - I can scroll the home page content and when I click on the button to open the ‘about’ page, nothing happens.

Normal Phonegap apps work fine on the Phone. Is there a problem with Ionic 2 / Angular 2 on WP?