In Oxygen 9.1 2007122116

With this RNG Schema

<?xml version="1.0" encoding="UTF-8"?>
<grammar
xmlns="http://relaxng.org/ns/structure/1.0"
xmlns:a="http://relaxng.org/ns/compatibility/annotations/1.0"
datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes">
    <start>
        <element name="root">
            <element name="foo">
                <text/>
            </element>
        </element>
    </start>
</grammar>

It validates this document

<?xml version="1.0" encoding="UTF-8"?>
<?oxygen RNGSchema="test-1.rng" type="xml"?>
<root>

</root>

Where am I wrong ?

Regards,

Xmlizer