UBB.threads PHP Forum Software Community Forums UBB.threads Version 7/8 Support "Breadcrumbs" not displaying

Running 7.6.0

At the top of most forum pages is what I call the "breadcrumb" area. It has a hierarchical list of how a person got to where they are. For example, in one of my forums, it looks like this:



But I have a couple of forums where the "breadcrumb" area never gets past the home page link regardless of which topic/message I display in that forum. For example:



Is there a forum setting that controls this? If so, what/where is it? Thanks.