Same here, however strangely: Dragging/dropping multiple messages to different mailboxes works fine. Only when dragging a single message to a mailbox fails when it's held over the mailbox, in the mailbox pane (drag icon disappears).
Same here, however strangely: Dragging/dropping multiple messages to different mailboxes works fine. Only when dragging a single message to a mailbox fails when it's held over the mailbox, in the mailbox pane (drag icon disappears).