Keys.priority: Keys.AfterItem doesn't work for TextField

import QtQuick 2.2
import QtQuick.Controls 1.1

Row {
    width: 100
    height: 50
    spacing: 10

    property alias control1: _control1
    TextField {
        id: _control1
        text: ""
        property bool gotit: false
        Keys.priority: Keys.AfterItem
        Keys.onPressed: {
            if ((!gotit) && (event.key === Qt.Key_B)) {
                gotit = true;
                console.log("get it")
                event.accepted = true;
                return;
            }
        }
    }
}