Behaviour change Qt 6.5->Qt 6.6 QDialogButtonBox::button()->setVisible(false) deletes button

#include <QApplication>
#include <QDialogButtonBox>
#include <QPushButton>

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

    QDialogButtonBox box(QDialogButtonBox::Ok);

    qDebug() << box.button(QDialogButtonBox::Ok);
    box.button(QDialogButtonBox::Ok)->setVisible(false);
    qDebug() << box.button(QDialogButtonBox::Ok);

    return 0;
}

QPushButton(0x23b073e1710)
QPushButton(0x23b073e1710)

QPushButton(0x2c258b26570)
QWidget(0x0)