Flickering of window when changing from Fullscreen mode to Maximized mode

import QtQuick
import QtQuick.Window
import QtQuick.Controls
import QtQuick.Layouts

Window {
    id: root
    width: 1000
    height: 2000
    visible: true

    Item{
        anchors.fill:parent
        ColumnLayout{
            id: myColumnLayout
            anchors.centerIn: parent
            anchors.margins: 15
            spacing: 15
            Button{
                id: btnNor
                Layout.fillWidth: true
                height: 150
                text: "NORMAL"
                onClicked: {
                    showNormal()
                }
            }
            Button{
                id: btnMax
                Layout.fillWidth: true
                height: 150
                text: "MAXIMIZE"
                onClicked: {
                    showMaximized()
                }
            }
            Button{
                id: btnFull
                Layout.fillWidth: true
                height: 150
                text: "FULL"
                onClicked: {
                    showFullScreen()
                }
            }
        }
    }
}