(not sure this is the right place : Microsoft Remote Desktop Beta for macos)
The copy / paste between the host and the remote using macos CMD does not work.
Please add few icons on a toolbar to force the copy/paste from/to as macos screen sharing tools do.
The macos icon labeled "clipboard" open a short menu with 2 entries : "send clipboard" and "retrieve clipboard".
First allow to send the clipboard from host to remote (macos to PC) the second allow to retrieve th PC clipboard to the mac.
Thanks