Windows on QEMU : opening only the application window instead of full windows desktop

Being Windows 10 as a guest under QEMU host (on my Ubuntu 20.04), can I only open the windows application’s window instead of complete desktop on virtual-manager? I checked SeamlessRDP but it is not working as it claims to be, the source is not maintained since from long. Any alternatives to SeamlessRDP? suggestions? tweaks?

Another question to Ubuntu team, QEMU 5.0 is out already and when the update will be available through Ubuntu upgrade channel?