title: Why my custom scrollbar not updating when jquery niceselect expands?
body: <p>I am using jquery <code>mCustomScrollbar</code> and niceselect plugin. When I expand niceselect dropdown by clicking on it, <code>mCustomScrollbar</code> is not updating. I think, this is happening because of the absolute position of the dropdown list. But how can I fix this?</p>
  
  <p>Here is the jsfiddle link:</p>
  
  <p><a href="https://jsfiddle.net/faridulhassan/u3zw09yr/" rel="nofollow noreferrer">https://jsfiddle.net/faridulhassan/u3zw09yr/</a></p>
  
  <pre><code>var $ = jQuery.noConflict(),
  wrapper = $('.wrapper');
  $('select').niceSelect();
  wrapper.mCustomScrollbar();
  </code></pre>