since my latest git update (kmail at ec861db1120dae7d5b49fabc247bee4be9fc7816) I can no longer drag/drop a mail from the message list into any other folder. The operation is simply not done.
confirmed. using the key shortcut 'm' works, however. just DND seems to be broken for some reason.
*** Bug 397880 has been marked as a duplicate of this bug. ***
fixed