Experiencing the same problem as Mat. Options passed in when calling the menu are not being applied correctly.
I’m calling the menu like so:
<?php wp_nav_menu( array(
'theme_location' => 'primary',
'container' => false,
'menu_class' => 'list-inline'
) ); ?>
Which results in the following markup:
<div class="list-inline">
<ul class=" nav-menu">
<li class="current_page_item">Home</li>
...snip...
</ul>
</div>
The menu class is actually being applied to the wrapper div, which shouldn’t even be there. I’m with Mat on the cause of this, see link in previous post.