Liquid Fire - child state updating

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  
  foo: 'bar',
  
  actions: {
    toggleIsOpen() {
      this.toggleProperty('isOpen');
    }
  }
});

router.js

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

const Router = Ember.Router.extend({
  location: 'none'
});

Router.map(function() {
  this.route('contact');
});

export default Router;

templates.application.hbs

<h1>Welcome to LF</h1>
<br>
<button {{action 'toggleIsOpen'}}>Toggle me</button>
<br>
{{#liquid-bind isOpen use='crossFade' growDuration=1000 as |currentlyOpen|}}
  {{#if currentlyOpen}}
	<p style='padding: 30px;background: whitesmoke'>
  Hey there {{foo}}!
  Is open is {{currentlyOpen}}
  </p>
  {{/if}}
{{/liquid-bind}}

twiddle.json

{
  "version": "0.7.2",
  "EmberENV": {
    "FEATURES": {}
  },
  "addons":{
    "liquid-fire":"latest",
    "ember-bootstrap": "latest"
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.4.4/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.4.3/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.4.4/ember-template-compiler.js"
  }
}