CSS not applied – bcn_display_list_multidim() works but appears as normal

I put this snippet in header.php:

<div class="breadcrumbs" typeof="BreadcrumbList" vocab="https://schema.org/">
    <?php if(function_exists('bcn_display'))
    {
        bcn_display();
    }?>
</div>

<ul class="breadcrumbs">
    <?php if(function_exists('bcn_display_list_multidim'))
    {
        bcn_display_list_multidim();
    }?>
</ul>

<ul class="breadcrumbs">
    <?php if(function_exists('bcn_display_list_multidim_children'))
    {
        bcn_display_list_multidim_children();
    }?>
</ul>

The first div, which uses bcn_display(), displays correctly.

The next two uls do not display correctly. The PHP calls work and generate the correct nested lis and uls. But, the CSS to make them Windows-Vista-like two-dimensional breadcrumbs is not being applied, so they are rendered as bulleted lists.

Version information:

• Breadcrumb NavXT version 6.6.0
• Breadcrumb NavXT Multidimension Extensions version 2.6.3
• WordPress 5.6
• PHP 7.4.13
• Theme: Twenty Sixteen version 2.3

Let me know if you need more info to reproduce the problem.

• This topic was modified 4 years, 3 months ago by Peter Froud. Reason: use < and > for the names of html tags
• This topic was modified 4 years, 3 months ago by Peter Froud. Reason: using < and > did not work, remove them