The "Control" can't inherit the palette of "ApplicationWindow"

import QtQuick 2.15
import QtQuick.Window 2.15
import QtQuick.Controls 2.0

ApplicationWindow {
    id: window
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")

    palette {
        window: "white"
        windowText: "red"
    }

    Row {
        anchors.centerIn: parent
        spacing: 10

        Rectangle {
            width: 100
            height: 100
            color: window.palette.windowText
            Text {
                anchors.centerIn: parent
                text: "Window"
                color: "white"
            }
        }

        Button {
            width: 100
            height: 100
            enabled: false
            text: "Button"
            palette.window: "yellow"

            background: Rectangle {
                color: parent.palette.windowText
            }

            Timer {
                id: updateTheControlPalette
                interval: 500
                running: true
                onTriggered: {
                    // If set the palette of the Button in there, then it's "windowText"
                    // color will can't follow the window's palette
                    parent.palette.window = "red"
                    parent.enabled = true
                }
            }

            onClicked: {
                window.palette.windowText = "blue"
            }
        }
    }
}