Unsupported type UserType error when using 'true' or 'false' as a condition for when:

When using true as a condition for the when clause of a State, QML fails with an Unsupported type error and doesn't load the file.

If put in parenthesis (i.e. (true)), it works.

import QtQuick 1.0

Rectangle {
    width: 360
    height: 360

    color: "blue";

    states: [State {
        name: "test";
        when: true;
    }]
}

The problem is also here when using 1 or 0.