Caused by r21542, found using bisection.
Clients now fail to connect:
Warning: AES decryption failed: invalid padding Error: AES encryption padding error - wrong key?
Affects both python2 and python3 builds.
Fixed in r24022.
Same problem with legacy mode: ticket:2793#comment:8.
this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/2431