Traversing from rte to rte doesn't make the field valid.

rte-validation-error.xhtml

<xhtml:html xmlns:xhtml="http://www.w3.org/1999/xhtml"
            xmlns:xforms="http://www.w3.org/2002/xforms"
            xmlns:xxforms="http://orbeon.org/oxf/xml/xforms"
            xmlns:ev="http://www.w3.org/2001/xml-events"
            xmlns:xs="http://www.w3.org/2001/XMLSchema"
            xmlns:fr="http://orbeon.org/oxf/xml/form-runner">

    <xhtml:head>
        <xforms:model id="main"
                      xxforms:session-heartbeat="true"
                      xxforms:show-error-dialog="false"
                      xxforms:external-events="submit-save submit-preview submit-cancel">

            <xforms:instance id="instance">
                <root>
                     <title/>
                     <rtetitle1/>
                     <rtetitle2/>
                </root>
            </xforms:instance>

            <xforms:bind nodeset="instance('instance')">
                <xforms:bind nodeset="title"/>
                <xforms:bind nodeset="rtetitle1" required="true()"/>
                <xforms:bind nodeset="rtetitle2" required="true()"/>
            </xforms:bind>

        </xforms:model>
    </xhtml:head>

    <xhtml:body class="body">
        <div>
         <xforms:input ref="relevant1">
         <xforms:label>Make input relevant</xforms:label>
         </xforms:input>
        </div>
        
        <div>
         <xforms:input ref="title">
               <xforms:label>Node Selector</xforms:label>
         </xforms:input>
        </div>

        <div>
         <xforms:textarea mediatype="text/html" ref="rtetitle1" height="100px">
                    <xforms:label>RTE1</xforms:label>
                    <xforms:alert>req</xforms:alert>
	     </xforms:textarea>
        </div>

        <div>
         <xforms:textarea mediatype="text/html" ref="rtetitle2" max="100">
                    <xforms:label>RTE2</xforms:label>
                    <xforms:alert>req</xforms:alert>
                </xforms:textarea>
        </div>

    </xhtml:body>
</xhtml:html>