Creating a new QMouseEvent can change globalPosition() in other QMouseEvents

    QMouseEvent e(QEvent::MouseButtonPress, QPointF(10, 10), QPointF(40, 50), Qt::LeftButton, Qt::LeftButton, Qt::NoModifier);
    Q_ASSERT(e.globalPosition() == QPointF(40, 50));

    QMouseEvent ee(e.type(), QPointF(10, 10), e.pos(), e.button(), e.buttons(), e.modifiers());
    Q_ASSERT(e.globalPosition() == QPointF(40, 50));