title: AngularJS: filter orderBy not working
body: <p>I'm trying to sort an array of sizes part of an object array(shoes). The orderBy filter does not work. I get the sizes displayed in random order.</p>
  
  <pre><code>&lt;div class="choice" ng-repeat="store in pc.stores track by $index"&gt;
    &lt;div class="sizes" &lt;span ng-repeat="size in store.shoes[0].sizes | orderBy:size track by $index"&gt;{{size}}&lt;/span&gt;&lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>Here's the screen grab of console.log
  <a href="https://i.stack.imgur.com/V4oVe.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/V4oVe.png" alt="enter image description here"></a></p>
  
  <p>I've also tried the orderBy filter in quotes ('size'). It still doesn't work. I don't know what i'm missing. 
  Thanks.</p>