Regression; (QML) Locale enums no longer exist

In QML I have a Label with:

text: {
   var loc = Qt.locale("nl_NL");
   return "(" + loc.currencySymbol(Locale.CurrencySymbol) + ") "

    + loc.currencySymbol(Locale.CurrencyDisplayName);
}

This follows the docs on https://doc.qt.io/qt-6/qml-qtqml-locale.html#currencySymbol-method

What I expected to see is:

(€) Euro

Instead what I see is:

(EUR) EUR

And I'm pretty sure that this worked in v.6.4

Adding this debug info:

console.log(Locale.CurrencyIsoCode);
console.log(Locale.CurrencyDisplayName);
console.log(Locale.CurrencySymbol);

gives me "undefined" 3 times.