Application.reset() issue since v1.11.0 up to latest

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  
  actions: {
    someAction() {
     this.container.lookup('application:main').reset(); 
    }
  }
});

initializers.setup.js

import Ember from 'ember';

export function initialize(container, app) {
	container.register('port:main', Ember.Object.extend());
  container.typeInjection('controller', 'port', 'port:main');
}

export default {
  name: 'setup',
	initialize
}

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<p>This gist shows a regression? with v1.10.0 - v1.11.0 where calling Application.reset() will fail with error "cannot re-register something, because it is already resolved", because since v1.11.0 ApplicationInstance was introduced, registry/container is not reset.</p>

<p>In v1.11.0 reset() method always built a new container - <a href="https://github.com/emberjs/ember.js/blob/v1.10.0/packages/ember-application/lib/system/application.js#L658">https://github.com/emberjs/ember.js/blob/v1.10.0/packages/ember-application/lib/system/application.js#L658</a></p>

<p>In v1.12.0 reset() method no longer builds new container/registry - <a href="https://github.com/emberjs/ember.js/blob/v1.12.0/packages/ember-application/lib/system/application.js#L658">https://github.com/emberjs/ember.js/blob/v1.12.0/packages/ember-application/lib/system/application.js#L658</a> but rather uses existing registry in buildInstance()</p>

<p>Because initializers always run then it is impossible to protect your app with "registry.has('my:module'), because one can't protect against third party initializers</p>

<p>Click reset button and error pops up in console.</p>
<br>
<button {{action 'someAction'}}>Reset</button>

twiddle.json

{
  "version": "0.8.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.5.1",
    "ember-data": "2.5.2",
    "ember-template-compiler": "2.5.1"
  }
}