QML GridView cuts off delegates on resize.

import QtQuick 2.0

Rectangle { // Main Window
    id: mainWindowBase
    width: 300
    height: 200
    color: "transparent"

    GridView {
        id: gridd
        width: parent.width
        height: parent.height

        model: contactModel
        delegate: Rectangle {
            height: gridd.cellHeight - 5
            width: gridd.cellWidth - 5
            color: kolor
            Text {
                id: label
                text: qsTr(name)
                anchors.centerIn: parent
            }
        }
    }

    ListModel {
        id: contactModel
        ListElement {
            name: "Jim Williams"
            kolor: "yellow"
        }
        ListElement {
            name: "John Brown"
            kolor: "red"
        }
        ListElement {
            name: "Bill Smyth"
            kolor: "green"
        }
        ListElement {
            name: "Sam Wise"
            kolor: "blue"
        }
    }
}