File Upload Double Bug

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'File Upload'
});

templates.application.hbs

<h1>{{appName}}</h1>

{{#file-upload	name="pin-file"
                accept="*/*"
                multiple=true
                onfileadd=(action "uploadPinFile")}}
  <p><i class="fa fa-upload"></i>Add an Pin.</p>
{{/file-upload}}
and

{{#file-upload	name="post-attachment"
                accept= '*/*'
                multiple=false
                onfileadd=(action "uploadAttachment")}}
  <i class="fa fa-paperclip"></i>
{{/file-upload}}

twiddle.json

{
  "version": "0.13.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.16.2",
    "ember-file-upload": "2.2.6",
    "ember-template-compiler": "2.16.2",
    "ember-testing": "2.16.2"
  },
  "addons": {
    "ember-data": "2.16.3"
  }
}