I almost copied the code from their website. The tab is initiated perfectly, and when I click on tabs, new panels are activated. However, the \"active\" class is not applied
When I removed the smooth scroll script (https://github.com/cferdinandi/smooth-scroll), it worked.
Make sure your jquery is inserted BEFORE bootstrap js file:
<script src="jquery.min.js" type="text/javascript"></script>
<link href="bootstrap.min.css" rel="stylesheet" type="text/css"/>
<script src="bootstrap.min.js" type="text/javascript"></script>