QML Window Container: Tab Focus between parent and embedded window doesn't work

import QtQuick
import QtQuick.Controls.Basic

Window {
    id: outerWindow
    width: 800
    height: 600
    visible: true
    color: "orange"

    Row {
        anchors.bottom: parent.bottom
        TextField {}
        Button {
            text: "Click Me"
            onClicked: console.log("Outer button clicked")
        }
    }

    WindowContainer {
        window: Window {
            width: 640
            height: 480
            visible: true
            color: "cyan"

            Row {
                anchors.bottom: parent.bottom
                TextField {}
                Button {
                    text: "Click Me"
                    onClicked: console.log("Inner button clicked")
                }
            }
        }
    }
}