I have found a workarround that work for me... When you try to reconnect the mouse does not respond and the screen is still black or with an old image of login screen but the keyboard still work. So my workarround is to log only with keyboard shortcut : Type the first letter of the user name and press ENTER. Nothing seems to happen but it's false, you can now type the password and then press enter. You session will open and you will see the remote screen again.
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