DOCBOOK-APPS: FO stylesheets copy fo:blocks into fo:root

I just ran the 1.48 stylesheets on a document which includes refentries.
The refentries were not included inside of an <fo:page-sequence>, but were
instead children of the <fo:root> element.  I assume this is a bug in the
stylesheets, but haven't tracked it down yet.  Has anyone else seen this?

Jeff