"Send new message" refuses to send to servername.tld/echo
I am unable to send a message to servername.tld/echo using the menu-entry "Send new message". When entering the jid (e.g. "jabber.ccc.de/echo"), which is a completely valid id and quite useful for s2s debugging purposes, an error message tells me that "Contact ID must be of the form "username@servername"".