This causes `p` tags which is invalid HTML.
<a class="dropdown-item" href="#">Separated link</a>
</div>
</div>
-
<div class="btn-group dropup">
<button type="button" class="btn btn-secondary">
Split dropup
<a class="dropdown-item" href="#">Separated link</a>
</div>
</div>
-
<div class="btn-group dropright">
<button type="button" class="btn btn-secondary">
Split dropright
<a class="dropdown-item" href="#">Separated link</a>
</div>
</div>
-
<div class="btn-group">
<div class="btn-group dropleft" role="group">
<button type="button" class="btn btn-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-expanded="false">