QPointerEvent::clone does not do a deep copy, leaving the cloned object partially aliased

#include <QMouseEvent>
#include <QDebug>

int main()
{
    const QPointF pos(10.0f, 10.0f);

    // create a mouse event (call it the original)
    QMouseEvent originalMe(QEvent::MouseButtonPress, pos, pos, pos, Qt::LeftButton, Qt::LeftButton, Qt::NoModifier);
    qDebug() << originalMe.allPointsAccepted(); // starts out false, as expected
    qDebug() << originalMe.points().first().isAccepted(); // starts out false, as expected

    // create a clone of the original
    auto clonedMe = originalMe.clone();
    qDebug() << clonedMe->allPointsAccepted(); // expecting false, because it's a clone
    qDebug() << clonedMe->points().first().isAccepted(); // starts out false, as expected

    // now we alter originalMe, which should *not* change clonedMe
    originalMe.setAccepted(true);
    qDebug() << clonedMe->allPointsAccepted(); // expecting false, but we get true -- changing originalMe erroneously changed clonedMe
    qDebug() << clonedMe->points().first().isAccepted(); // expecting false, but we get true

    // please note that I am using the "accepted" flag because it is available to manipulate via public methods
    // the problem exists for all data in QEventPoint, because QEventPoint is implemented with QExplicitlySharedDataPointer but doesn't do detach() as part of clone()
}