[Linux] onWindowMove called on window focus and windowManager.getPosition() seems working bad

[acorn371]

Hi,
I'm developing app size/position size&position persistence by shared_preference on windows and linux platforms . On windows platform all work great.
On linux I'm having some issues:

1. WindowListener.onWindowMove and WindowListener.onWindowMoved are called on app window focus and aren't called on window move:

    @override
    void onWindowMove() {
      _platform.savePosition();
    }

    @override
    void onWindowMoved() {
      _platform.savePosition();
    }

2. inside method _platform.savePosition(); the call to final Offset pos = await windowManager.getPosition(); always return Offset(26.0, 23.0) moving and dragging my app window

    @override
    Future<void> savePosition() async  {
      final Offset pos = await windowManager.getPosition();
  
      await PlatformUtils.prefs.setDouble(PREF_MAINWIN_POSX, pos.dx);
      await PlatformUtils.prefs.setDouble(PREF_MAINWIN_POSY, pos.dy);
  
      print("save-pos: ${pos.dx} ${pos.dy}");
    }

I'm working with flutter 3.24.0 and window_manager: 0.4.2 on Debian 11.

Is there a workaround to these issues ? Or better, a patch ?
Thanks,
Marco