didUpdateAttrs not called

application.controller.js

import Ember from 'ember';

export default Ember.Controller.extend({

	init() {
	this._super(...arguments);
	this.set('model', Ember.A());
  },

	actions:{

	addObject() {
	this.get('model').pushObject({num: Math.random()});
  }

  }
});

application.template.hbs

<h2>didUpdateAttrs not called on array modifications</h2>
<br>
<br>
{{my-component model=model}}
<br>

<button {{action 'addObject'}}>
add </button>
{{outlet}}
<br>
<br>

my-component.component.js

import Ember from 'ember';

export default Ember.Component.extend({
didUpdateAttrs() {
this._super(...arguments);
console.log('updateAttrs');
}
});

my-component.template.hbs

model.length = {{model.length}}
<br>
<br>
Check console for `updateAttrs` while adding
{{yield}}

twiddle.json

{
  "version": "0.6.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "canary",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.3.3/ember-data.js",
    "ember-template-compiler": "canary"
  }
}