Noticed the same on earlier version as well.
From what I see on the net is that schema needs to changed..
Are you testing some error condition?
May be you can try to set soap head in your request, note that i tried using soapui, it is adding addtional Security with mustUnderstand="1", but tried in firefox http poster where i see authentication failed, may be you can the same if it solves what you are looking for. Note that if you are using HTTP Poster plugin, you may have to set SOAPAction in header property and its value.
<soapenv:Header>
<wsse:Security soapenv:mustUnderstand="0" xmlns:wsse="
http://schemas.xmlsoap.org/ws/2002/07/secext"> <wsse:UsernameToken>
<wsse:Username>test</wsse:Username>
<wsse:Password>test</wsse:Password>
</wsse:UsernameToken>
</wsse:Security>
</soapenv:Header>
