Keyboard Input broken in parented Window - Windows 10

[nat3Github]

I ran the test (https://github.com/RustAudio/baseview/blob/master/examples/open_parented.rs)

when hovering over normal window:
in windows 10 WSL => logs Parent: KeyEvent
in normal windows 10 => logs Parent: KeyEvent

when hovering over parented window:
in windows 10 WSL => logs CHILD: KeyEvent
in normal windows 10 => logs PARENT: KeyEvent

because of this key events are also broken in nih-plug on windows 10. robbert-vdh/nih-plug#154

[nat3Github]

apparently this is expected behavior. if the window is focused the parented windows receives key events.

the difference comes from ubuntu-linux focusing the parented window when hovering over it and windows 10 does not do this.