recompute bug

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

helpers.my-helper.js

import Ember from 'ember';

export default Ember.Helper.extend({
  count: 0,
  compute() {
    if (!this.timer) {
      this.timer = window.setInterval(() => {
		    this.incrementProperty('count');
        console.log('call recompute', this.get('count'));
      	this.recompute();
    	}, 500);
    }    
    return "count = " + this.get('count');
  }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
Count: {{my-helper}}
<br>
<br>

twiddle.json

{
  "version": "0.10.7",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.10.0",
    "ember-data": "2.10.0",
    "ember-template-compiler": "2.10.0",
    "ember-testing": "2.10.0"
  },
  "addons": {}
}