Changing Attribute Bug

application.controller.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName:'Ember Twiddle',
  time: new Date(),
  
  actions: {
  	updateTime() {
    	this.set('time', new Date());
    }
  }
});

application.template.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
<hr>
{{#outer-component time=time showYield=false}}
<p>This is yielded</p>
{{/outer-component}}
<hr>
<br>
<button {{action 'updateTime'}}>Update Time</button>
<br><br>
	Repro Step:
  <ol>
  	<li>Click Show Yield to set showYield to true</li>
  	<li>Click Update time which updates another attribute on the component</li>
  	<li>Notice that showYield is reset back to false</li>
	</ol>

outer-component.component.js

import Ember from 'ember';

export default Ember.Component.extend({
  actions: {
  	showYield() {
    	this.set('showYield', true);
    }
  }
});

outer-component.template.hbs

Time: {{time}}

{{#if showYield}}
	{{yield}}
{{else}}
	<p>You are not showing yield</p>
{{/if}}
<button {{action 'showYield'}}>Show Yield</button>

twiddle.json

{
  "version": "0.5.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "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/2.2.0/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.2.0/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.2.0/ember-template-compiler.js"
  }
}