After concatenating all of the frontend files, content types are unable to register properly. Each content calls the inherited registerContentType() function, but querySelector('polymer-element') cannot find the correct element and causes the elem variable to be undefined.
After concatenating all of the frontend files, content types are unable to register properly. Each content calls the inherited registerContentType() function, but querySelector('polymer-element') cannot find the correct element and causes the elem variable to be undefined.