Service computed bug

components.example-component.js

import Ember from 'ember';

const {
  Component,
  computed,
  inject: { service },
} = Ember;

export default Component.extend({
	example: service(),
  
  init() {
    //this.get('example');
    this._super(...arguments);
  },
  
  testValue: computed('example.someValue', function() {
    return Math.random();
  }),
});

router.js

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

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

Router.map(function() {
});

export default Router;

routes.index.js

import Ember from 'ember';

const { inject: { service } } = Ember;

export default Ember.Route.extend({
  example: service(),
  
  actions: {
  	setRandomValue() {
      this.get('example').setRandomValue();
    }
  },
});

services.example.js

import Ember from 'ember';

export default Ember.Service.extend({
  someValue: null,
  
  setRandomValue() {
    this.set('someValue', Math.random());
  },
});

templates.application.hbs

{{outlet}}

templates.components.example-component.hbs

Value (should change when service value changes): {{testValue}}

templates.index.hbs

<button {{action 'setRandomValue'}}>Change service value</button>

{{example-component}}

twiddle.json

{
  "version": "0.10.4",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.7.0",
    "ember-data": "2.7.0",
    "ember-template-compiler": "2.7.0"
  },
  "addons": {}
}