mkauf8

Hmm. Just checked the behavior again. I see that jquery does replace the active class only on the li-element but not on the a-element. So I moved the first tab active function in your class-tabs-widget.php from the a- element to li-element.

<li class="nav-item<?php echo empty( $item['active'] ) ? '' : ' active'; ?>">

instead of

<a class="nav-link<?php echo empty( $item['active'] ) ? '' : ' active'; ?>"

it works like a charm now 🙂

Have fun!