XPRA windows often get "stuck on front."
After using it for a few minutes to an hour, some of the windows in the Xpra session will cover all other windows in the system (including non-Xpra windows).
For example, after opening a few dialog boxes using perforce (on remote machine) my editor (sublime on remote) will get stuck in top most position on the desktop. Alt-Tabbing to bring up other application windows places them behind the sublime window.
Can you reproduce this problem with a non-proprietary application that I could test with?
If you cannot reproduce with an application I could test with, please run the client with "-d focus,metadata" and post the output. Without more information, I will need to close as "needinfo".
this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/1381