ListModel move() method moves entire list up when cacheBuffer >= item height

import QtQuick 1.1
import com.nokia.symbian 1.1

Page {
    id: mainPage

    ListModel {
        id: dataModel
        ListElement {itemId: 1;}
        ListElement {itemId: 2;}
        ListElement {itemId: 3;}
        ListElement {itemId: 4;}
        ListElement {itemId: 5;}
        ListElement {itemId: 6;}
        ListElement {itemId: 7;}
        ListElement {itemId: 8;}
        ListElement {itemId: 9;}
        ListElement {itemId: 10;}
        ListElement {itemId: 11;}
        ListElement {itemId: 12;}
        ListElement {itemId: 13;}
        ListElement {itemId: 14;}
        ListElement {itemId: 15;}
    }

    Component {
        id: delegate

        ListItem {
            id: listItem

            Column{
                anchors.fill: listItem.paddingItem

                ListItemText {
                    role: "Title"
                    platformInverted: window.platformInverted
                    text: "Item " + itemId
                    width: parent.width
                }
            }

            onClicked: {
                if(index > 0){
                    console.log("\nReplacing item " + index + " with item" + (index -1) + "\n")
                    dataModel.move(index - 1, index, 1)
                }
            }

            onYChanged: {
                console.log("ITEM " + index + ", Y changed to: " + y)
            }
        }
    }

    ListView {
        id: listView
        anchors.fill: parent
        model: dataModel
        delegate: delegate

        cacheBuffer: 70
    }
}
 

Replacing item 2 with item1

ITEM 0, Y changed to: -70
ITEM 1, Y changed to: 0
ITEM 3, Y changed to: 140
ITEM 4, Y changed to: 210
ITEM 5, Y changed to: 280
ITEM 6, Y changed to: 350
ITEM 7, Y changed to: 420
ITEM 8, Y changed to: 490
ITEM 9, Y changed to: 560
ITEM 10, Y changed to: 630