Breadcrumbs with a dropdown

You’ll need to clarify what you mean by a dropdown/hover on the breadcrumbs. Specifically, what are you expecting to see in the dropdown? If you’re talking about something like what Windows Vista/7/10 does in explorer, then there is a guide on what you need markup and CSS wise to achieve this: https://mtekk.us/archives/guides/vista-like-breadcrumbs-for-wordpress/

• This reply was modified 4 years, 2 months ago by John Havlik.

So, that looks like the way Windows Explorer works, which the article I linked to provides a run down of how to achieve it. The gist is you need Breadcrumb NavXT Multidimension Extensions: https://ww.wp.xz.cn/plugins/breadcrumb-navxt-multidimension-extensions/ to provide the markup and then some styling to handle the display.