When writing text using native input method on S60, the last word is not visible except when selected

import Qt 4.6

Rectangle {
    color: "steelblue"
    TextInput {
        x: 10; y: 10
        width: parent.width
        height: 25
        color: "black"
        Rectangle {
            z: -1
            color: "white"
            border.color: "black"
            border.width: 1
            anchors.fill: parent
            anchors.margins: -5
        }
    }
}