Setting TextFieldStyle font.pointSize doesn't work

The attached example will complain about the line font.pointSize: 50
It will show error: 'font' does not have members. (M17)
The issue will also prevent QML designer from opening.

When launching the application the code works fine. Also if the line is written as "font

" Qt Creator doesn't complain about it and designer works as well.

import QtQuick 2.1
import QtQuick.Controls 1.1
import QtQuick.Controls.Styles 1.1

Rectangle {
    width: 360
    height: 360

    TextField {
        anchors.centerIn: parent
        width: 300
        height: 200

        style: TextFieldStyle {
            font.pointSize: 50
        }
    }
}