Ember-render-loading-twice

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  loading: false,
  URLOfAPI: Ember.computed({
  	get() {
      // this.set('loading', true);
    	return 'API/WORK/';
    }
  }),
  statusOfAPI: Ember.computed('loading', {
    get() {

    	return this.get('loading') ? 'loading...' : 'Not loading';
    }
  })
});

my-comp-2.component.js

import Ember from 'ember';

export default Ember.Component.extend({
});

my-comp-2.template.hbs

Status of Comp - 2 :: {{statusOfAPI}}
<br/>
Status URL for App :: {{URLOfAPI}}

my-component-1.component.js

import Ember from 'ember';

export default Ember.Component.extend({
});

my-component-1.template.hbs

Status if comp - 1 :: {{statusOfAPI}}

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
{{my-component-1 statusOfAPI=statusOfAPI}}
<hr />
{{my-comp-2 
	statusOfAPI=statusOfAPI
  URLOfAPI = URLOfAPI
}}
<br>
<br>

twiddle.json

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