DOCBOOK-APPS: Docbook XSL FO List Items?

["Michael P. Urban" <Michael.P.Urban@jpl.nasa.gov>]

I notice that the 1.44 (and earlier) FO stylesheet for Docbook generates
leading space for paragraph items in itemizations, such as in the
duck book example for <procedure>:
<procedure><title>An Example Procedure</title>
<step>
  <para>
    A Step
  </para>
</step>
</procedure>

Applying the 1.44 fo XSL stylesheet with no customizations, the resulting
fo contains:

<fo:list-item>
 <fo:list-item-label end-indent="label-end()">
    <fo:block id="d0e5">1</fo:block>
 </fo:list-item-label>
 <fo:list-item-body start-indent="body-start()">
    <fo:block space-before.optimum="1em" 
	      space-before.minimum="0.8em"
              space-before.maximum="1.2em">
      A Step
    </fo:block>
 </fo:list-item-body>
</fo:list-item>

(white space inserted for readability).  FOP (0.20.1) produces
output in which the paragraph appears a little below the label,
like

   1
      A Step

I _think_ FOP is doing the right thing with this -- as I read things,
the space-before is part of the <block> rectangle, and cannot be
omitted.  But it is certainly not what is intended.  

Does this represent a bug in the style sheet (the first paragraph,
only, should not have space-before), or am I (and the FOPers)
misreading the XSL fo specs?

	Mike