[winswitch] Shadowing problem

[Bob Babcock]

I mostly stopped using xpra when I retired, but having just rebuilt my Fedora 36 
system on slightly newer hardware, I thought I should test it.  My Windows and 
Linux systems are both local; I'm trying xpra as an alternative to my KVM 
switch, but might want to use it remotely as well.

If I start xpra on the Win/10 side by
     xpra shadow ssh://user@host
I see the session that was running on the Fedora side, and all seems well.
But, the local display is now black, and stays black after xpra stop.  The above
command gets me back to the running session.

If I type ctrl-alt-f2, then ctrl-alt-f1, I get the local display back with the 
shadow still working.
After doing this, I see messages:
     Desktop effects were restarted due to a graphics reset

Any suggestions?

Xpra win/10 is version 4.4
Fedora version is xpra-4.4-10.r32017.fc36.x86_64
Fedora video is xorg-x11-drv-nvidia-390xx-390.154-1.fc36.x86_64

Thanks