QLabel with rich text (HTML) does not pass mouseReleaseEvent to parent

#include <QApplication>
#include <QDebug>
#include <QLabel>
#include <QVBoxLayout>

class Widget : public QWidget
{
protected:
    void mousePressEvent(QMouseEvent *event) override
    {
        qInfo() << "pressed" << event;
    }

    void mouseReleaseEvent(QMouseEvent *event) override
    {
        qInfo() << "released" << event;
    }
};

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    Widget w;
    auto layout = new QVBoxLayout(&w);
    auto label1 = new QLabel("<b>rich text DOES NOT pass mouse release event to parent</b>");
    layout->addWidget(label1);
    auto label2 = new QLabel("plain text DOES pass mouse release event to parent");
    layout->addWidget(label2);
    w.show();
    return a.exec();
}