I saw this when I browsed https://conf.researchr.org/track/models-2020/models-2020-tutorials
It opens the first tab (correct), but highlights the last tab as active (incorrect).

Submitted by Elmer van Chastelet on 8 September 2020 at 10:07

There’s some content, entered by the content manager, with js code in the accepted paper tab that triggers this:

<script>
$(document).ready(function(){
  $( "ul#tab li:nth-child(1)" ).removeClass("active");
  $( "ul#tab li:nth-child(4)" ).addClass("active");

  $( "#About" ).removeClass("active");
  $( "#Accepted-tutorials" ).addClass("active");
});
</script>