ember-drag-drop state error

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  dragCoordinator: Ember.inject.service(),
  actions: {
    hide() {
      this.set('hidden', true);
    }
  }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
<br>
<br>
Dragging the draggable component to and releasing resets the dragCoordinator's currentDragObject, unless you drop on the drop target (then it sticks, even though/because the component has been removed)
<br>
<br>
{{#draggable-object-target action="hide"}}
	Drop here to hide
{{/draggable-object-target}}
<br>
<br>

{{#unless hidden}}
  {{#draggable-object content=this}}
    Draggable
  {{/draggable-object}}
{{/unless}}
<br>
<br>

dragCoordinator.currentDragObject: {{dragCoordinator.currentDragObject}}

twiddle.json

{
  "version": "0.13.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.16.2",
    "ember-template-compiler": "2.16.2",
    "ember-testing": "2.16.2"
  },
  "addons": {
    "ember-data": "2.16.3",
    "ember-drag-drop": "0.4.6"
  }
}