title: jquery Chosen and mCustomScrollbar not working properly together
body: <p>I use jquery Chosen together with malihu's plugin mCustomScrollbar and
  I found it not compatible. </p>
  
  <p>I want to apply the scrollbar on chosen result and its not working. Here is my working fiddle to see my work. </p>
  
  <p>HTML:</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>$(function() {
    $('select.select').chosen({
      disable_search_threshold: 10, 
      width: "50%"
    });
    
    //$('.chosen-results').mouseenter(function() {
      $('.chosen-results').mCustomScrollbar({
        theme: "dark-3"
      });
    //});
  });</code></pre>
  <pre class="snippet-code-css lang-css prettyprint-override"><code>.select {
    max-height: 100px;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"&gt;&lt;/script&gt;
  &lt;script src="https://cdnjs.cloudflare.com/ajax/libs/malihu-custom-scrollbar-plugin/3.1.5/jquery.mCustomScrollbar.js"&gt;&lt;/script&gt;
  &lt;script src="https://cdnjs.cloudflare.com/ajax/libs/chosen/1.7.0/chosen.jquery.js"&gt;&lt;/script&gt;
  
  &lt;link href="https://cdnjs.cloudflare.com/ajax/libs/malihu-custom-scrollbar-plugin/3.1.5/jquery.mCustomScrollbar.css" rel="stylesheet"/&gt;
  &lt;link href="https://cdnjs.cloudflare.com/ajax/libs/chosen/1.7.0/chosen.css" rel="stylesheet"/&gt;
  
  &lt;select id="name" class="select"&gt;
    &lt;option value=""&gt;Select&lt;/option&gt;
    &lt;option value="aaa"&gt;aaa&lt;/option&gt;
    &lt;option value="bbb"&gt;bbb&lt;/option&gt;
    &lt;option value="ccc"&gt;ccc&lt;/option&gt;
    &lt;option value="ddd"&gt;ddd&lt;/option&gt;
    &lt;option value="eee"&gt;eee&lt;/option&gt;
    &lt;option value="fff"&gt;fff&lt;/option&gt;
  &lt;/select&gt;</code></pre>
  </div>
  </div>
  </p>
  
  <p>jsFiddle: <a href="https://jsfiddle.net/bbwfvcj0/" rel="nofollow noreferrer">https://jsfiddle.net/bbwfvcj0/</a></p>