Sheet may be displayed on the wrong window (or not displayed)

[stuartmorgan-g]

This code is not the right way to get the window containing a Flutter view in a plugin; there is no guarantee that a) there is a key window, or b) that the key window is the window with the Flutter view.

Instead, plugins should get the window of the view returned by the plugin registrar. See file_selector for an example of reliably getting the correct window.

[EchoEllet]

Thanks again for the detailed report!

I expected these issues as I'm familiar with Java/Kotlin for Android, but not with macOS, iOS, or the Apple ecosystem.