RSVP _super bug

controllers.application.js

import Ember from 'ember';
import MixinOne from '../mixins/one';
import MixinTwo from '../mixins/two';

const {
  on,
  RSVP
} = Ember;

export default Ember.Controller.extend(MixinOne, MixinTwo, {
  name: "RSVP _super bug",
  
  theMethod() {
    console.log('controller');

    RSVP.resolve().then(() => {
      // this._super === ROOT()
      console.log(this._super);
      this._super.apply(this, ['with promise']);
    });
		
    // this._super === superWrapper()
    console.log(this._super);
    this._super.apply(this, ['without promise']);
  },

  callTheMethod: on('init', function() {
    this.theMethod();
  })
});

mixins.one.js

import Ember from 'ember';

export default Ember.Mixin.create({
  theMethod() {
    console.log('mixin-one', arguments);
    return this._super.apply(this, arguments);
  }
});

mixins.two.js

import Ember from 'ember';

export default Ember.Mixin.create({
  theMethod() {
    console.log('mixin-two', arguments);
    return this._super.apply(this, arguments);
  }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
<br>
<br>

twiddle.json

{
  "version": "0.7.2",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "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/2.4.4/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.4.3/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.4.4/ember-template-compiler.js"
  }
}