The xpra client appears to behave incorrectly when run in an X session with multiple X screens. Even though it is launched on the second screen (i.e. DISPLAY=:0.1), any pre-existing windows are opened on the first screen. New windows correctly appear on the second screen.
I only have a single screen attached to my computer right now, which makes this more difficult to test. I will try to get hold of a second one, and hope that setting it up with the nvidia drivers as Separate screens (classic X11) works ok.
Xorg config for multiple screens
Here's my xorg.conf, if it helps.
Please provide more information, I have just tested this with a simple xterm and it correctly showed up on whatever screen I started the client from.
You can use the bug report tool to collect data, and maybe also include the -d metadata,screen
client debug output.
the new monitor I had ordered - arrived today
Not heard back, closing.
this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/831