EventType.WindowDestroy returned data is null

[psovit]

The WindowDestroy event which gets called when closing a window is not returning any value in the data i.e. forceClose value.

I am listening to the event in this manner: _window?.on(EventType.WindowDestroy, (Window window, dynamic data)

The event call gets notified but data is empty.

Also seeing an error in the console:

W/FlutterJNI(17960): Tried to send a platform message to Flutter, but FlutterJNI was detached from native C++. 
Could not send. Channel: im.zoe.labs/flutter_floatwing/window_msg. Response ID: 9