RowLayout: Layout not properly drawn when a control is hidden and shown

import QtQuick 2.0
import QtDesktop 1.0

Item {
    width: 800
    height: 300

    RowLayout {
        ComboBox {
            width: 200
            model: [1,2,3]
        }
        CheckBox {
            text: "checkbox"
        }
        ToolButton {
            id: resetButton
            text: toshowhide.visible ? "Hide" : "Show"
            implicitWidth: 100
            onClicked: toshowhide.visible = !toshowhide.visible
        }

        CheckBox {
            id: toshowhide
            text: "Show Hide"
        }
        SpinBox {
        }
    }
}