title: Bootstrap selectpicker does not show options
body: <p>I have the below simple code that is not working properly.
  In fact I'm trying to use <a href="https://silviomoreto.github.io/bootstrap-select/" rel="nofollow noreferrer"><code>bootstrap-select - Silvio Moreto</code></a> in my project.
  It's not showing the options when I click on it.
  I narrowed the code to the basic example given by the author but still the same issue.</p>
  
  <p>My code: </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>$('.selectpicker').selectpicker({
    style: 'btn-info',
    size: 4
  });</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/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"&gt;&lt;/script&gt;
  &lt;!-- Latest compiled and minified CSS --&gt;
  &lt;link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-select/1.12.4/css/bootstrap-select.min.css"&gt;
  &lt;!-- Latest compiled and minified JavaScript --&gt;
  &lt;script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-select/1.12.4/js/bootstrap-select.min.js"&gt;&lt;/script&gt;
  &lt;!-- (Optional) Latest compiled and minified JavaScript translation files --&gt;
  &lt;script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-select/1.12.4/js/i18n/defaults-fr_FR.min.js"&gt;&lt;/script&gt;
  
  &lt;select class="selectpicker"&gt;
    &lt;option&gt;Mustard&lt;/option&gt;
    &lt;option&gt;Ketchup&lt;/option&gt;
    &lt;option&gt;Relish&lt;/option&gt;
  &lt;/select&gt;</code></pre>
  </div>
  </div>
  </p>
  
  <p>Here is what I'm getting:
  <a href="https://i.stack.imgur.com/wVle2.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/wVle2.png" alt="enter image description here"></a></p>