I've got my Yoast breadcrumbs working perfectly in my php templates. The only issue I'm having (and maybe I'm missing something) is this:
Despite have checked "Bold the last page in the breadcrumb" in the "Internal Links" tab of Yoast SEO (WP-Admin), if you browse to a post category, the last item in the breadcrumb (which is the category) is not wrapped in < strong > tags.
If a page is the last item in the breadcrumb, it is wrapped. But if the last item is a category, it's not. In this instance, your url would be something like domain.com/category/computers. In the breadcrumb, "computers" is last, but not wrapped in < strong > tags.
Any help? Or am I missing the point?