DOCBOOK-APPS: Pb with simplelist inside table entry

Greetings,

I encounter a pb when I want to insert a simplelist inside a table entry: 
the cell is empty.

My config :

Saxon 6.5.2
FOP 0.20.4
Docbook XML 4.2
Docbook XSL 1.58.1

Here is a sample file to prove it :

<?xml version="1.0" encoding="iso8859-1" standalone="no"?>
<!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
                 "/opt/docbook/docbook-xml/docbookx.dtd">

<chapter>
  <title>Test Chapter</title>
  <sect1>
   <title>Test Section</title>
   <para>
    <informaltable frame="all">
     <tgroup cols="2">
      <thead>
       <row>
        <entry>Col1</entry>
        <entry>Col2</entry>
       </row>
      </thead>
      <tbody>
       <row>
        <entry>
        Line1
        </entry>
        <entry>
         <para>
          <simplelist type="vert" columns="1">
           <member>Elem1</member>
           <member>Elem2</member>
           <member>...</member>
          </simplelist>
         </para>
        </entry>
       </row>
      </tbody>
     </tgroup>
    </informaltable>
   </para>
  </sect1>
</chapter>

The PDF file generated is attached to this mail.

I've made a test to change the simplelist type to "inline" and it works.

Thanks for your help.

Regards Alain