It is more complicated when you are using an RDM manager program that uses mstsc API.
This has been broken for some months now. I have to access older servers
it impacts hosts running
windows 2008 x86,
windows 2008 r2 X64
from any Windows 11 machine since the second or third windows insider release preview of 24H2
While RDM supports using older versions of the RDP Api supposedly from RDP6.1 to RDP 10.11 it makes no difference so far
FreeRDP API has problems with cutting and pasting the clipboard which is essential
time for a fix please Bill