inline within block within table-cell (scrunch or wrap

I am getting significantly different outputs from the below FO sample
when I process with XEP versus FOP.  The difference occurs with the
table-cell>block>inline portion.  XEP will scrunch the text into one
line, where FOP will let the line wrap.

Thanks for your help,
John

<fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format">
	<fo:layout-master-set>
		<fo:simple-page-master master-name="A4" page-width="297mm"
page-height="210mm" margin-top="1cm" margin-bottom="1cm"
margin-left="1cm" margin-right="1cm">
			<fo:region-body margin="3cm"/>
			<fo:region-before extent="2cm"/>
			<fo:region-after extent="2cm"/>
			<fo:region-start extent="2cm"/>
			<fo:region-end extent="2cm"/>
		</fo:simple-page-master>
	</fo:layout-master-set>
	
	<fo:page-sequence master-reference="A4" format="A">
		<fo:flow flow-name="xsl-region-body">

    <fo:block><fo:inline>What if I have a bunch of text? What if I
have a bunch of text? What if I have a bunch of text? What if I have a
bunch of text? What if I have a bunch of text?</fo:inline></fo:block>

     <fo:table table-layout="fixed" width="100%"
border-collapse="separate" space-before="5pt" font-size="10pt">
       <fo:table-column column-number="1"
column-width="proportional-column-width(1)"/>
       <fo:table-column column-number="2"
column-width="proportional-column-width(1)"/>
       <fo:table-body>
         <fo:table-row keep-together="always">
           <fo:table-cell border=".25pt solid black"
padding-right="2pt" padding-left="2pt" padding-bottom="2pt"
padding-top="2pt">
                          <fo:block><fo:inline>What if I have a bunch
of text? What if I have a bunch of text? What if I have a bunch of
text? What if I have a bunch of text?</fo:inline></fo:block>
           </fo:table-cell>
           <fo:table-cell border=".25pt solid black"
padding-right="2pt" padding-left="2pt" padding-bottom="2pt"
padding-top="2pt">
                          <fo:block>What if I have a bunch of text?
What if I have a bunch of text? What if I have a bunch of text? What
if I have a bunch of text?</fo:block>
           </fo:table-cell>
         </fo:table-row>
       </fo:table-body>
     </fo:table>

		</fo:flow>
	</fo:page-sequence>
</fo:root>