Was just testing out Xpra on Python3 with latest beta and got the following when trying to open an application through the tray start menu.
Traceback (most recent call last): File "/usr/lib64/python3.7/site-packages/xpra/client/gtk_base/gtk_tray_menu_base.py", line 1657, in app_launch command = re.sub(r'\%[fFuU]', '', command) File "/usr/lib64/python3.7/re.py", line 192, in sub return _compile(pattern, flags).sub(repl, string, count) TypeError: cannot use a string pattern on a bytes-like object
Fixed in r22446.
this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/2275