QComboBox does not receive mousePressEvent if item view is opened

#include <QApplication>
#include <QCloseEvent>
#include <QComboBox>
#include <QDebug>
#include <QHideEvent>
#include <QListWidget>
#include <QMouseEvent>
#include <QVBoxLayout>

class MyBox : public QComboBox
{
public:
    explicit MyBox()
        : QComboBox{}
    {}

protected:
    void mousePressEvent(QMouseEvent *e) override
    {
        qDebug() << Q_FUNC_INFO << "Mouse pressing";
        QComboBox::mousePressEvent(e);
    }
};

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);

    MyBox *cBox = new MyBox;

    QListWidget *view = new QListWidget;
    new QListWidgetItem("Item 1", view);
    new QListWidgetItem("Item 2", view);
    new QListWidgetItem("Item 3", view);
    cBox->setModel(view->model());
    cBox->setView(view);

    QWidget *main = new QWidget;
    QVBoxLayout *layout = new QVBoxLayout;
    layout->addWidget(cBox);
    main->setLayout(layout);
    main->show();

    return a.exec();
}

#include "main.moc";