Primary Navigation: Web Link not working as expected

Hi,

I inserted a new Web Link within the standard Web Link Set "Primary Navigation".

Unfortunatley, this new entry is not rendered as a link.

If I click on it, nothing happens.

If I then insert a child Web Link below this initial Web Link, both Web Links bhave as a link as expected.

The problem only occurs if it is a ssingle Web Link without a child Web Link.

The Web Template for the Primary Navigation remains to be "Header" as per out of the box.

F12 reveals that the single Web Link is rendered as 

<li class="weblink  dropdown open">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown" title="Home" aria-label="Home" aria-haspopup="true" aria-expanded="true">


                            Home


                            <span class="caret"></span>

                        </a>
                        
                    </li>

Any ideas why this is not working as expected?

Best regards.