Leading is broken

[pgundlach]

<Layout xmlns="urn:speedata.de:2009/publisher/en" 
  xmlns:sd="urn:speedata:2009/publisher/functions/en"
  version="3.5.12"
>
 
  <DefineFontfamily name="tmp" fontsize="4.2" leading="5">
    <Regular fontface="sans"/>
  </DefineFontfamily>

  <Record element="data">
    <PlaceObject>
      <Textblock width="5">
        <Paragraph fontface="tmp">
          <Value select="sd:dummytext()"/>
        </Paragraph>
      </Textblock>
    </PlaceObject>

  </Record>
</Layout>