I have a simple Bootstrap 3 navigation developed with nested pills.
The problem is that when I switch tabs between Menu A and Menu B, tabs (for example) Tab B stop being active (.active) and their content is not displayed.
I’ve already broken my head looking for the place where I went wrong.
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<section>
<div class="container">
<div class="row">
<div class="col-lg-2 col-xs-12">
<div class="nav flex-column nav-pills vertical-control" id="v-pills-tab" role="tablist" aria-orientation="vertical">
<a class="nav-link nav-link-sidebar active" id="tab-yt" data-toggle="tab" href="#control-yt" role="tab" aria-controls="v-pills-yt" aria-selected="true">
Menu A</a>
<a class="nav-link nav-link-sidebar" id="tab-tw" data-toggle="tab" href="#control-tw" role="tab" aria-controls="v-pills-tw" aria-selected="false">Menu B</a>
</div>
</div>
<div class="col-lg-10 col-xs-12">
<div class="tab-content" id="v-pills-tabContent">
<div class="tab-pane fade in active" id="control-yt" role="tabpanel" aria-labelledby="tab-yt">
<div class="row">
<div class="col-12">
<div class="nav nav-pills nav-pills-items" id="v-pills-tab" role="tablist" aria-orientation="horizontal">
<a class="nav-link" id="tab-c-a" data-toggle="tab" href="#c-a" role="tab" aria-controls="c-a" aria-selected="true">Tab A</a>
<a class="nav-link active" id="tab-c-b" data-toggle="tab" href="#c-b" role="tab" aria-controls="c-b" aria-selected="true">Tab B</a>
</div>
</div>
<div class="col-12">
<div class="tab-content sub-tab-content" id="v-pills-tabContent">
<div class="tab-pane" id="c-a" role="tabpanel" aria-labelledby="tab-c-a">
<div class="row">
<div class="col-md-12">
Content A
</div>
</div>
</div>
<div class="tab-pane fade in active" id="c-b" role="tabpanel" aria-labelledby="tab-c-b">
<div class="row">
<div class="col-md-12">
Content B
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<!-- yt Ends -->
<div class="tab-pane fade in" id="control-tw" role="tabpanel" aria-labelledby="tab-tw">
<div class="row">
<div class="col-12">
<div class="nav nav-pills nav-pills-items" id="v-pills-tab" role="tablist" aria-orientation="horizontal">
<a class="nav-link active" id="tab-tw-1" data-toggle="tab" href="#tw-1" role="tab" aria-controls="tw-1" aria-selected="true">Tab C</a>
</div>
</div>
<div class="col-12">
<div class="tab-content sub-tab-content" id="v-pills-tabContent">
<div class="tab-pane fade in active" id="tw-1" role="tabpanel" aria-labelledby="tab-tw-1">
<div class="row">
<div class="col-md-12">
Content C
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</section>