Focus Out Blocking Click

components.input-autocomplete.js

import Ember from 'ember';

export default Ember.Component.extend({
    value: null,
    options: null,

    /**
     * List of available options
     * @return {Array}
     */
    _filteredOptions: function(){
        let value = this.get('value') || '';
        return this.get('options').filter(x => x.toLowerCase().includes(value.toLowerCase()));
    }.property('options.[]', 'value'),

    /**
     * Opens and closes the dropdown for options
     * @type {Boolean}
     */
    _focused: false,

    actions: {
        focused() {
            this.set('_focused', true);
        },
        unfocused() {
           this.set('_focused', false);
        },
        selectOpt(opt) {
           this.set('value', opt);
        }
    }
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  opts: ['brown','cow','how','now'],
  val: 'what'
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{input-autocomplete options=opts value=val }}
<br>
SELECTED VALUE: {{val}}
<br>

templates.components.input-autocomplete.hbs

<div class="dropdown">
    {{input value=value class='form-control' focus-in="focused" focus-out="unfocused" }}
    {{#if _focused}}
      <ul class='dropdown-menu'>
          {{#each _filteredOptions as |opt|}}
              <li><a href="#" {{action "selectOpt" opt}}>{{opt}}</a></li>
          {{/each}}
      </ul>
    {{/if}}
</div>

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": {}
}