Incorrect "Invalid QML element name" error for Q_GADGET enums

One method of exposing C++ enums to QML has been to use Q_GADGET in combination with qmlRegisterUncreatableType, e.g.:

class MyStatus
{
    Q_GADGET
public:
    enum Value
    {
        Off,
        On,
        Failed
    };
    Q_ENUM(Value)
...

This works fine with no errors in Qt 5.15.2.
However, when using Qt 6.4.3, it seems to work but you get the following runtime error in the console:
qt.qml.typeregistration: Invalid QML element name "MyStatus"; value type names should begin with a lowercase letter.

It is normal/recommended for enums and their elements to start with an upper-case letter.

Also, is there a new/recommended way of using an enum in both C++ and QML?