Questions (Bugs) - qmllint / ApplicationWindow / Screen

I am not sure if I miss something or if there are some bugs.
We are using an ApplicationWindow with some scripting:

ApplicationWindow {
	id: root
	[...]
	function test {
		[...]
		... root.screen.height ...
		[...]
		... (root.screen as Screen).height ...
		[...]
	}
}

1. We are using `root.screen` because `Screen` (attached property) will only provide the primary screen and not the screen where the application is living. Is this intentional?

2. Using `root.screen.height` leads to a qml lint warning because it is a `variant`:

Warning: App.qml: Member "height" not found on type "QObject" [missing-property]
			... root.screen.height  ...
                                       	^^^^^^

3. Using `(root.screen as Screen).height` leads to a qml lint warning:

Warning: App.qml: Member "height" not found on type "QQuickScreen" [missing-property]
			... (root.screen as Screen).height  ...
                                       	            ^^^^^^

So it would be good to know how to solve the lint issue.