title: Bootstrap vertical pills nav not working as expected
body: <p>I've directly copy pasted a code snippet from the Bootstrap 4 docs on vertical pills (<a href="https://getbootstrap.com/docs/4.0/components/navs/#javascript-behavior" rel="nofollow noreferrer">https://getbootstrap.com/docs/4.0/components/navs/#javascript-behavior</a>) into Codepen and I can't seem to get it to work. </p>
  
  <p>Codepen: <a href="https://codepen.io/ajayns/pen/vQoPNW?editors=1011n" rel="nofollow noreferrer">https://codepen.io/ajayns/pen/vQoPNW?editors=1011n</a></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-html lang-html prettyprint-override"><code>&lt;script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"&gt;&lt;/script&gt;
  &lt;div class="nav flex-column nav-pills" id="v-pills-tab" role="tablist" aria-orientation="vertical" data-tabs="tabs"&gt;
    &lt;a class="nav-link active" id="v-pills-home-tab" data-toggle="tab" href="#v-pills-home" role="tab" aria-controls="v-pills-home" aria-selected="true"&gt;Home&lt;/a&gt;
    &lt;a class="nav-link" id="v-pills-profile-tab" data-toggle="tab" href="#v-pills-profile" role="tab" aria-controls="v-pills-profile" aria-selected="false"&gt;Profile&lt;/a&gt;
    &lt;a class="nav-link" id="v-pills-messages-tab" data-toggle="tab" href="#v-pills-messages" role="tab" aria-controls="v-pills-messages" aria-selected="false"&gt;Messages&lt;/a&gt;
  &lt;/div&gt;
  
  &lt;div class="tab-content" id="v-pills-tabContent"&gt;
    &lt;div class="tab-pane fade show active" id="v-pills-home" role="tabpanel" aria-labelledby="v-pills-home-tab"&gt;home&lt;/div&gt;
    &lt;div class="tab-pane fade" id="v-pills-profile" role="tabpanel" aria-labelledby="v-pills-profile-tab"&gt;profile&lt;/div&gt;
    &lt;div class="tab-pane fade" id="v-pills-messages" role="tabpanel" aria-labelledby="v-pills-messages-tab"&gt;messages&lt;/div&gt;
  &lt;/div&gt;</code></pre>
  </div>
  </div>
  </p>
  
  <p>Is there anything that I'm missing out or doing wrong? I've checked this with a local setup and getting the same issue.</p>