Calling Webservice removes root element of XML

Hello community,

I am experiencing a problem in context with ColdFusion 10 and webservices.

My webservice creates some XML content, parses it with the XMLParse() function and returns it with returntype="xml".

Testing it with an additional .cfm script (I invoke the webservice with cfinvoke, as you can see below) I noticed that the root element of the xml is missing - so does every child of the document root except the first one.

If I run my test script on a ColdFusion 8 server everything works fine and the xml content is just as expected.

Some information about my local server configuration:

Windows 7

IIS 7

ColdFusion 10

Here is my webservice.cfc

<cfcomponent output="false">
    <cffunction name="testFunction"
                access="remote"
                returntype="xml"
                output="false">
        <cfset var local = {} />
        <cfsavecontent variable="local.string">
            <rootElement>
                <child>1</child>
                <child>2</child>
            </rootElement>
        </cfsavecontent>
        <cfreturn XMLParse(Trim(local.string)) />
    </cffunction>
</cfcomponent>

My test script caller.cfm:

<cfinvoke 
webservice="http://localhost/returntype_xml/webservice.cfc?wsdl"

refreshwsdl="true"

method="testFunction"

returnvariable="someVariable">
</cfinvoke>
<cfoutput>
    <pre>#HTMLEditFormat(someVariable)#</pre>
</cfoutput>
<cfdump var="#someVariable#" abort="false">

The generated wsdl (outsourced to pastebin):

http://pastebin.com/VJaU7AMw

and finally the output that my test script (caller.cfm) generates:

<?xml version="1.0" encoding="UTF-8"?>
<child>
 1
 </child>

As you can see, most of the xml content is missing.

Calling the function directly (/webservice.cfc?method=testFunction) works quite well, thats why I suppose that the webservice call causes the problem.

Does anybody know what the source of the problem might be? Or ist maybe a known bug?

Best regards,

Stefan