Writing 2 years ago:

Yes banister , LeonidS fixed it. He said " there was issue which we've -->fixed in coming UNA version <--so i've added the proper breadcrumb.html file to posts template "

So, was something changed after 2021??? What was it? Any updates on this issue? Has the file structure changed?

Please reply here: https://una.io/d/breadcrumbs-affected-by-una-13-upgrade