service injection bug

components.my-component1.js

import Component from '@ember/component'
import { inject as service } from '@ember/service'
import { computed } from '@ember/object'
import { alias } from '@ember/object/computed'

export default Ember.Component.extend({
  myService: service(),

  init() {
    this._super(...arguments)
   	console.log(this.myService)
  },

  y: computed('myService.x', function() {
    // if (Math.floor(Math.random()*2) > 0) {
    //  console.log(this.get('myService.x'))
    // }
    return Math.floor(10*Math.random())
  }),

  z: alias('myService.x'),

  t: computed('z', function() {
    return Math.floor(10*Math.random())
  })
});

components.my-component2.js

import Component from '@ember/component'
import { inject as service } from '@ember/service'
import { computed } from '@ember/object'
import { alias } from '@ember/object/computed'

export default Component.extend({
  myService: service(),

  init() {
    this._super(...arguments)
//   	console.log(this.myService)
  },

  y: computed('myService.x', function() {
    // if (Math.floor(Math.random()*2) > 0) {
    //  console.log(this.get('myService.x'))
    // }
    return Math.floor(10*Math.random())
  }),

  z: alias('myService.x'),

  t: computed('z', function() {
    return Math.floor(10*Math.random())
  })
});

controllers.application.js

import Controller from '@ember/controller';

export default Controller.extend({


});

services.my-service.js

import Service from '@ember/service'
import { later } from '@ember/runloop'


export default Service.extend({
  init() {
    this.set('x', 4);
    this.next();
  },
  
  increment() {
    this.incrementProperty('x');
    console.log(this.get('x'))
  },

  next() {
    later(this, this.timer, 3000);
  },

  timer() {
    this.increment();
    this.next();
  }
});

templates.application.hbs

<h1>Welcome</h1>
<br>
<br>
{{my-component1}}
<br>
{{my-component2}}
<br>
<br>

templates.components.my-component1.hbs

My Component 1
<br>
{{y}}
<br>
{{t}}

templates.components.my-component2.hbs

My Component 2
<br>
{{y}}
<br>
{{t}}

twiddle.json

{
  "version": "0.15.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.4.3",
    "ember-template-compiler": "3.4.3",
    "ember-testing": "3.4.3"
  },
  "addons": {
    "ember-data": "3.4.2"
  }
}