When RPiTC2 Raspberry Pi Terminal Client looses connection to the Terminal RDP server it locks up and there is no way to close the rDesktop client.

A button combination brings up a top bar with an X on the right. Clicking the X will close the rDesktop client. So it can be restarted when the connection is restored.

You can use this button combination also to close a live RDP window and leave it running to connect to it later or get to the RPiTC2 desktop to shut the local RPiTC2 OS down or reboot.

The button combination is:

Alt+Crtl+Backspace