ember-power-select onfocus problem

components.modified-onfocusexample.js

import Ember from 'ember';
const {isBlank} = Ember;

export default Ember.Component.extend({
  cities: ['Barcelona', 'London', 'New York', 'Porto'],
  actions: {
    handleFocus(select, e) {
      if (this.focusComesFromOutside(e)) {
        select.actions.open();
      }
    },

    handleBlur() {
      console.debug('EPS blurred!');
    }
  },

  // Methods
  focusComesFromOutside(e) {
    let blurredEl = e.relatedTarget;
    
    if (isBlank(blurredEl)) {
      return false;
    }
    
    return !blurredEl.classList.contains('ember-power-select-search-input');
  }
});

components.original-onfocusexample.js

import Ember from 'ember';

export default Ember.Component.extend({
  cities: ['Barcelona', 'London', 'New York', 'Porto'],
  actions: {
    handleFocus(select, e) {
      if (this.focusComesFromOutside(e)) {
        select.actions.open();
      }
    },

    handleBlur() {
      console.debug('EPS blurred!');
    }
  },

  // Methods
  focusComesFromOutside(e) {
    let blurredEl = e.relatedTarget;
    return !blurredEl || !blurredEl.classList.contains('ember-power-select-search-input');
  }
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
{{original-onfocusexample}}
<br>
<br>
<hr>
{{modified-onfocusexample}}

templates.components.modified-onfocusexample.hbs

This is modified version that seems to be working; but I am not confident about it!
<br>
<br>
<input type="text" placeholder="Focus me and press TAB to focus the select" style="line-height: 2; width: 100%">
<br>
<br>
{{#power-select
  selected=selected
  options=cities
  onchange=(action (mut selected))
  onfocus=(action "handleFocus")
  onblur=(action "handleBlur")
  as |name|
}}
  {{name}}
{{/power-select}}

templates.components.original-onfocusexample.hbs

This is original  <a href="http://www.ember-power-select.com/docs/action-handling">example</a>
<br>
If you choose an option with a mouse click; the select will not close up!
<br>
<br>
<input type="text" placeholder="Focus me and press TAB to focus the select" style="line-height: 2; width: 100%">
<br>
<br>
{{#power-select
  selected=selected
  options=cities
  onchange=(action (mut selected))
  onfocus=(action "handleFocus")
  onblur=(action "handleBlur")
  as |name|
}}
  {{name}}
{{/power-select}}

twiddle.json

{
  "version": "0.11.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.10.2",
    "ember-data": "2.11.0",
    "ember-template-compiler": "2.10.2",
    "ember-testing": "2.10.2"
  },
  "addons": {
  	"ember-power-select": "1.4.3"
  }
}