QObjectComputedProperty does not invoke observers

#include <QtCore/QtDebug>
#include <QtCore/QObject>
#include <QtCore/QObjectBindableProperty>
#include <QtCore/QObjectComputedProperty>

class TestClass : public QObject
{
    Q_OBJECT
public:
    int getComputed() const { return foo * 2; }

    Q_OBJECT_BINDABLE_PROPERTY(TestClass, int, foo)
    Q_OBJECT_COMPUTED_PROPERTY(TestClass, int, computedData, &TestClass::getComputed)
};

int main(int argc, char *argv[])
{
    TestClass test;
    auto notifier = test.computedData.addNotifier([&]() {
        qDebug() << "NOTIFY: computed=" << *test.computedData;
    });

    test.foo = 2;
    // Uncomment to have the NOTIFY debug message printed
    // test.computedData.notify();

    // The below works, so dependency tracking works fine. Just the observers
    // of QObjectComputerProperty don't.
    QProperty<int> other;
    other.setBinding([&] { return *test.computedData; });
    auto otherNotifier = other.addNotifier([&] {
        qDebug() << "NOTIFY: other=" << *other;
    });
    test.foo = 42;
}

#include "main.moc"