Misaligned valign="bottom" PlaceObject

[pgundlach]

Version 3.5.12

<Layout xmlns="urn:speedata.de:2009/publisher/en"
  xmlns:sd="urn:speedata:2009/publisher/functions/en">

  <Trace grid="yes"/>
  <Pageformat height="5cm" width="7cm"/>

  <Record element="data">
    <PlaceObject column="1" row="1" valign="bottom" >
      <Box height="2" width="2"  backgroundcolor="yellow"/>
    </PlaceObject>
  </Record>
</Layout>

Should be on line 1.