Move or copy mail from Webmin locks the recipients mailbox.

Hi,

I think there is a bug in "Read user mail".
If I log in as a domain owner(or root) to Webmin and open a mail in a user mail account, and then want to copy or move it to another user the recipients mailbox gets "blocked" and the user are NOT able to get new messages that arrive until the user logs in from Webmin or Usermin and delete the copied/moved mail. The really bad thing is that the user don