br in element has no effect

[pgundlach]

<?xml version="1.0" encoding="UTF-8"?>
<Layout
  xmlns="urn:speedata.de:2009/publisher/en"
  xmlns:sd="urn:speedata:2009/publisher/functions/en">

  <Pageformat width="148mm" height="210mm"/>

  <Record element="data">
    <Output>
      <Text>
        <Paragraph html="all">
          <ForAll select="part">
            <Value select="."/>
          </ForAll>
        </Paragraph>
      </Text>
    </Output>
    <PlaceObject>
        <Textblock>
            <Paragraph>
                <Value select="s"></Value>
            </Paragraph>
        </Textblock>
    </PlaceObject>
  </Record>

</Layout>

<data>
    <part>A</part>
    <part>
        <br />
    </part>
    <part>B</part>

    <s>a<b><br/></b>b</s>
</data>

should show

A
B

a
b

but shows

AB

ab

instead.