Component leaking

components.possibly-leaking-component.js

test;
import Ember from 'ember';

export default Ember.Component.extend({
  people: ['donatello', 'michelangelo']
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  
  otherPeople: ['brak', 'zorak']
});

templates.application.hbs

{{possibly-leaking-component}}
{{possibly-leaking-component people=otherPeople}}

templates.components.possibly-leaking-component.hbs

<h3>Awesome People Component</h3>
<ul>
{{#each people as |person|}}
  <li>{{person}}</li>
{{/each}}
</ul>

twiddle.json

{
  "version": "0.8.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "1.13.13",
    "ember-data": "1.13.15",
    "ember-template-compiler": "1.13.13"
  }
}