title: Bootstrap Collapse not working properly (Hide Not working)
body: <p>I am using bootstrap collapse functionality is not working properly in our IBM web portal.
  It working fine on “show” functionality but not working in  “Hide” functionality.</p>
  
  <pre><code>&lt;a href="#demo" data-toggle="collapse"&gt;&lt;span class=”icon”&gt;Collapsible&lt;/span&gt;&lt;/a&gt;
  
  &lt;div id="demo" class="collapse"&gt;
  Sample Code 
  &lt;/div&gt;
  </code></pre>
  
  <p>I see in console window the “<strong>area-expanded</strong>” value did not change in our collapse and also did not change class name like “<strong>collapsed</strong>” and collapse <strong>in</strong>”.</p>
  
  <p>How to fix it .</p>