WebEngineProfile doesn't instantiate in QML if property declarations are in a specific order

Declaring a WebEngineProfile like this:

WebEngineProfile {
    storageName: 'Test'
    offTheRecord: false
}

...will not work, whereas reversing the order of storageName and offTheRecord will:

WebEngineProfile {
    offTheRecord: false
    storageName: 'Test'
}

As a result, existing applications will not have usable profiles.