Cursor jumps past the right margin

[pgundlach]

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

    <Record element="data">
        <PlaceObject>
            <Textblock>
                <Paragraph>
                    <Value select="sd:dummytext()"></Value>
                </Paragraph>
            </Textblock>
        </PlaceObject>
        <Message select="sd:number-of-columns()"/>
        <Message select="sd:current-column()"/>
    </Record>
</Layout>

with vesion 2.7.1 gives the following results: 19 and 20. 20 is obvious bad, as there is no column number 20.