[xsl] xsl2 saxon8B stripping off unwanted separation characters

I have a problem normalizing strings in xslt2 with saxon 8B. Here is  
an example
XML    <a href="http://www.ac-versailles.fr/etabliss/michelet-vanves";  
target="_blank"> Lycée
              Michelet</a>
XSL
        <xsl:element name="lycée">
            <xsl:attribute name="nom">
                <xsl:value-of separator=" " select="a"/>
            </xsl:attribute>
        </xsl:element>
        <xsl:value-of select="lycée"/>

RESULT
            <lycée nom=" Lycée&#xA;              Michelet">

----------------------------------------------------------------------

If a add a normalize-space function within the select,

               <xsl:value-of separator=" " select="normalize-space 
(a)"/>
XALAN y Saxon 6.5.5 output what I want

                <lycée nom="Lycée Michelet">

On the contrary, Saxon8B outputs a static error :

	A sequence of more than one item is not allowed as the first  
argument of normalize-unicode()
        URL: http://www.w3.org/TR/xpath20/#ERRXPTY0004

What's happening and how is it posible to normalize strings with  
saxon 8B ?
Thanks

Jacques Fauquex
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