5.0.8MacOS Client has no Menu, Keyboard not working

[mainkats]

Describe the bug
When starting Xpra on an arm64 Mac and attaching to a remote server, the connection establishes and the Windows are drawn, but:

• Keyboard is not working
• Xpra Client Menus are empty, and hotkeys are not working
  Mouse for the remote windows is working, though.

To Reproduce
Steps to reproduce the behavior:

1. server command: xpra start :XX
2. client command:
   /Applications/Xpra5.0.10.app/Contents/MacOS/Xpra attach --ssh=ssh --microphone=off --speaker=off ssh://username@server/XX
3. specific action to trigger the bug: Triggers on connection

System Information (please complete the following information):

• Server OS: Debian bookworm
• Client OS: OSX 13.6.9
• Xpra Server Version 6.1.2-r1-1
• Xpra Client Version 5.0.10-r8

Additional context
The same error happens with 5.0.9, connection works with the 5.0.8 Release.

In the console, this Python error pops up:

2024-09-13 19:09:47,142 Xpra GTK3 client version 5.0.10-r0
2024-09-13 19:09:47,156  running on Mac OS X 13.6.9
xpra main error:
Traceback (most recent call last):
  File "/Applications/Xpra5.0.10.app/Contents/Resources/lib/python/xpra/scripts/main.py", line 121, in main
    return run_mode(script_file, cmdline, err, options, args, mode, defaults)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Applications/Xpra5.0.10.app/Contents/Resources/lib/python/xpra/scripts/main.py", line 455, in run_mode
    return do_run_mode(script_file, cmdline, error_cb, options, args, mode, defaults)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Applications/Xpra5.0.10.app/Contents/Resources/lib/python/xpra/scripts/main.py", line 642, in do_run_mode
    return run_splash(args)
           ^^^^^^^^^^^^^^^^
  File "/Applications/Xpra5.0.10.app/Contents/Resources/lib/python/xpra/scripts/main.py", line 2402, in run_splash
    return splash_screen.main(args)
           ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Applications/Xpra5.0.10.app/Contents/Resources/lib/python/xpra/splash_screen.py", line 294, in main
    with program_context("splash", "Splash"):
  File "/Applications/Xpra5.0.10.app/Contents/Resources/lib/python/xpra/platform/__init__.py", line 79, in __enter__
    init(self.prgname, self.appname)
  File "/Applications/Xpra5.0.10.app/Contents/Resources/lib/python/xpra/platform/__init__.py", line 24, in init
    do_init()
  File "/Applications/Xpra5.0.10.app/Contents/Resources/lib/python/xpra/platform/darwin/__init__.py", line 15, in do_init
    from AppKit import NSApp    #@UnresolvedImport
    ^^^^^^^^^^^^^^^^^^^^^^^^
  File "AppKit/__init__.pyc", line 217, in <module>
  File "AppKit/__init__.pyc", line 12, in _setup
  File "Foundation/__init__.pyc", line 203, in <module>
  File "Foundation/__init__.pyc", line 12, in _setup
  File "CoreFoundation/__init__.pyc", line 37, in <module>
  File "CoreFoundation/__init__.pyc", line 12, in _setup
  File "objc/__init__.pyc", line 7, in <module>
  File "objc/_objc.pyc", line 13, in <module>
  File "objc/_objc.pyc", line 9, in __load
  File "imp.pyc", line 343, in load_dynamic
ImportError: dlopen(/Applications/Xpra5.0.10.app/Contents/Resources/lib/python/lib-dynload/objc/_objc.so, 0x0002): symbol not found in flat namespace '_ffi_find_closure_for_code_np'

[totaam]

I believe this is a duplicate of Xpra-org/gtk-osx-build#27

TBH, I don't think any of us understand why this occasionally breaks, or how to fix it once and for all.
The only thing I could do is to spin a full rebuild of the whole ~135 packages that make up the environment we use for building xpra.
Does 5.0.10-r1 work any better?

[mainkats]

Does 5.0.10-r1 work any better?

Yes, with 5.0.10-r1 the keyboard works and the menu shows up.

[totaam]

I have also issued 6.1.2-r1 from the same build environment.

This will do for now, until it breaks again..