Explicitly setting ScrollIndicator's active property doesn't work as expected

import QtQuick
import QtQuick.Controls
import QtQuick.Window

Window {
    width: 640
    height: 480
    visible: true

    ListView {
        anchors.fill: parent
        model: 10
        delegate: Rectangle {
            width: ListView.view.width
            height: 100
            color: Qt.rgba(Math.random(),Math.random(), Math.random(), 1.0)
        }

        ScrollIndicator.vertical: ScrollIndicator {
            active: true // <--- we set it to true as want to see the scroll indicator all the time
        }
    }
}