Changing nickname makes the person appear twice (jabber.org)

[neckcen]

On a conference.jabber.org room, using "/nick newname" will result in 2 people being in the room, the new nickname and a ghost with the old name. (try this here for example: http://speeqe.com/room/[email protected]/)

This does not happen if you're using a different client or on a speeqe.com chatroom.