Loading Problem

application.template.hbs

<h1>application/template.hbs</h1>
{{#link-to 'index'}} index {{/link-to}}
{{#link-to 'test'}} test {{/link-to}}
{{#link-to 'test.subtest'}} subtest {{/link-to}}
<br>
{{outlet}}

loading.template.hbs

<h2>Loading ...</h2>

router.js

import Ember from 'ember';
import config from './config/environment';

var Router = Ember.Router.extend({
  location: config.locationType
});

Router.map(function() {
  this.route('test', function() {
    this.route('subtest');
  });
});

export default Router;

test.subtest.route.js

import Ember from 'ember';

export default Ember.Route.extend({
  model: function() {
    var deferred = Ember.$.Deferred();
    window.setTimeout(function() {
      deferred.resolve({});
    }, 10000);
    return deferred.promise();  
  }
});

test.subtest.template.hbs

<h1>test/subtest/template.hbs</h1>
{{outlet}}

test.template.hbs

<h1>test/template.hbs</h1>
{{outlet}}

twiddle.json

{
  "version": "0.4.10",
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/1.13.9/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/1.13.11/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/1.13.9/ember-template-compiler.js"
  }
}