Ignored action on re-render?

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  //query: '',
  clicked: false,
  arr: Ember.computed('query', function() {
    console.log('arr', this.get('query'));
    let a = [];
    if (this.get('query') !== undefined) {
      a.push('test2');
    } else {
      a.push('test');
    }
    return Ember.A(a);
  }),
  
  queryParams: ["clicked", "query"],
  
  actions: {
    test() {
      this.set('clicked', true);
    },
  },
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
Click in textbox first, then click link
<br>
Query: '{{query}}'<br>
Clicked: {{clicked}}<br>
<br>
{{my-component arr=arr query=query clicked=clicked}}
<br>
<br>

templates.components.my-component.hbs

{{input value=query}}
{{!--autofocus="autofocus"--}}
{{#each arr as |t|}}
<a href="#" {{action (action (mut clicked) true)}}>Click me</a>
{{/each}}

twiddle.json

{
  "version": "0.11.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.js",
    "ember": "2.11.0",
    "ember-data": "2.11.1",
    "ember-template-compiler": "2.11.0",
    "ember-testing": "2.10.2"
  },
  "addons": {}
}