a few seconds of fast clipboard spinning
The problem comes from
clipit: we send the token to the client when something has been copied to the server's clipboard, clipit asks for it, we give an empty reply (r22470) to try to keep it quiet... but then it takes ownership of the clipboard and sets a new value!
Fix is to just stop talking to the obnoxious clipit: r26248.
We now also have the ability to blacklist clients on win32 servers: r26247. (can be useful for virtualbox's
VBoxTray.exe if it causes problems)
this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/2754