*UPDATE*
it seems that indeed there is an issue with the CP redirect or the call to $PORTAL_ACTION$ Screen shot of Chinese Characters attached.
here is the html source for the screenshot:
<HTML>
<HEAD><TITLE>Redirecting...</TITLE></HEAD>
<BODY>
<SPAN STYLE="font-family: Tahoma, Verdana, Arial, Helvetica, sans-serif; font-size: 11px;">
<B>Redirecting to <A HREF="
http://www.google.com">
http://www.google.com</A>...</B>
</SPAN>
<SCRIPT LANGUAGE="JavaScript">
<!--
LogoutWin = window.open('', 'Logout', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=256,height=64');
if (LogoutWin) {
LogoutWin.document.write('<HTML>');
LogoutWin.document.write('<HEAD><TITLE>Logout</TITLE></HEAD>') ;
LogoutWin.document.write('<BODY BGCOLOR="#435370">');
LogoutWin.document.write('<DIV ALIGN="center" STYLE="color: #ffffff; font-family: Tahoma, Verdana, Arial, Helvetica, sans-serif; font-size: 11px;">') ;
LogoutWin.document.write('<B>Click the button below to disconnect</B><P>');
LogoutWin.document.write('<FORM METHOD="POST" ACTION="">');
LogoutWin.document.write('<INPUT NAME="logout_id" TYPE="hidden" VALUE="1362cca963292217">');
LogoutWin.document.write('<INPUT NAME="logout_popup" TYPE="submit" VALUE="Logout">');
LogoutWin.document.write('</FORM>');
LogoutWin.document.write('</DIV></BODY>');
LogoutWin.document.write('</HTML>');
LogoutWin.document.close();
}
document.location.href="
http://www.google.com";
-->
</SCRIPT>
</BODY>
</HTML>