ScrollIndicator overshoot doesn't respect paddings

import QtQuick 2.5
import QtQuick.Window 2.2
import QtQuick.Controls 2.0

ApplicationWindow {
    width: 200
    height: 200
    visible: true

    color: "tomato"
    Rectangle {
        anchors.fill: parent
        anchors.margins: 20
    }

    Flickable {
        anchors.fill: parent
        contentWidth: parent.width * 2
        contentHeight: parent.height * 2

        ScrollIndicator.horizontal: ScrollIndicator { padding: 22 }
        ScrollIndicator.vertical: ScrollIndicator { padding: 22 }
    }
}