I’m facing an issue using Paper-elements & iron-elemnts in my angular 2 project. Angular 2 RC4 with elements are working fine but after upgrading the angular 2 version the elements are not displaying and error in functionality like iron-collpase is not working in my project.
Now you can either configure your package.json file to use Angular 2.1.x version or wait until we’ll fix this to work with Angular 2.2.0 (next week EARLIEST).