I am unable to reconnect to the server after disconnecting using the "Disconnect" button in the DMP-menu. I have to restart the client (not the server!) in order to reconnect.
There is no such problem when I use the KSP menu: Quit to main menu

The first way yields the following error message in the log:
[21:17:49][INFO] : Client xxx disconnected in ReceiveCallback, endpoint [::ffff:xx.xx.60.38]:51479, error: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. (An existing connection was forcibly closed by the remote host)
[21:17:49][DEBUG] : Online players is now: 0, connected: 0
[21:17:49][DEBUG] : Error closing client connection: The operation is not allowed on non-connected sockets.

I changed my Clientname and two characters in the IP address.
KSP Version: 1.0.2.842
DMP Version: Release build (KSP 1.0) Tag: v0.2.2.0

It might be a server issue. I am not sure yet and did not further investigate the issue yet, as I am currently testing other things - sorry. Let me know if you can recreate it. I am sorry if this is a dupe issue.

Should be fixed as of 789a921