power select leak

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  showPowerSelect: true,
  names: ['Stefan', 'Miguel', 'Tomster', 'Pluto'],
  actions: {
    foo() { },
    toggleShow() {
    	this.set('showPowerSelect', !this.get('showPowerSelect'));
    }
  }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
{{#if showPowerSelect}}
	Power Select:
	{{#power-select options=names onchange=(action "foo") as |name|}}
  	{{name}}
	{{/power-select}}
{{/if}}

<button onclick=(action 'toggleShow')></button>
<br>
<br>

twiddle.json

{
  "version": "0.15.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.2.2",
    "ember-template-compiler": "3.2.2",
    "ember-testing": "3.2.2"
  },
  "addons": {
    "ember-data": "3.2.0",
    "ember-power-select": "*"
  }
}