Breadcrumb Settings?

Are there settings to control the display of breadcrumbs? I have Vaultwiki installed on two Xenforo forums. On the first, my breadcrumbs are displaying the entire path of the article it's currently on.

But on my 2nd forum, it only ever displays the top "Wiki" breadcrumb, and never adds the further areas/subareas to the breadcrumb. I can't figure out where my two installations differ.

Please PM me an example link where the breadcrumbs do not include all the appropriate bits, and explain what the expected bits are.