Tabs JavaScript not removing 'active' class from nav-pills nav-stacked

[Gong-Bao-Chicken]

Expected Behaviour:
When activating a nav-link, the active state gets removed and added to the now active nav-link. Therefore, the active state gets removed and added to the active item. Additionally the content transitions between the current and now active.

Problem:
The active class is not being removed from nav-link. Thus each item can only be navigated to once.

Codepen ( UPDATED ) :
http://codepen.io/anon/pen/ALRGqj?js-preprocessor=none

I hope the syntax is correct since there is no example in the docs:

<!-- Navigation -->
<nav class="nav nav-pills nav-stacked" role="tablist">
  <a class="nav-link active" data-toggle="pill" role="tab"  href="#profile">Active</a>
  <a class="nav-link" data-toggle="pill" role="tab" href="#buzz">Link</a>
  <a class="nav-link" data-toggle="pill" role="tab" href="#references">Link</a>
  <a class="nav-link disabled" href="#">Disabled</a>
</nav>

<!-- Tab panes -->
<div class="tab-content" role="tabpanel">
  <div role="tabpanel" class="tab-pane fade in active" id="profile">...</div>
  <div role="tabpanel" class="tab-pane fade" id="buzz">bbb</div>
  <div role="tabpanel" class="tab-pane fade" id="references">ccc</div>
</div>

edit: May be related to #20039 , but tabs work, pills (stacked) dont

[twbs-lmvtfy]

Hi @P-h-i-l!

You appear to have posted a live example (http://codepen.io/anon/pen/ALRGqj.html), which is always a good first step. However, according to the HTML5 validator, your example has some validation errors, which might potentially be causing your issue:

• line 13, column 3 thru column 75: An element with role=tab must be contained in, or owned by, an element with role=tablist.
• line 14, column 3 thru column 65: An element with role=tab must be contained in, or owned by, an element with role=tablist.
• line 15, column 3 thru column 71: An element with role=tab must be contained in, or owned by, an element with role=tablist.

You'll need to fix these errors and post a revised example before we can proceed further.
Thanks!

(Please note that this is a fully automated comment.)

[cvrebert]

Possible duplicate of #19374.

[mdo]

Dupe of #18566 and #19374.