click in padding area doesn't trigger clicked() signal in QPushButton

#include <QApplication>
#include <QPushButton>
#include <QWidget>

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

  qApp->setStyleSheet(R"(
QPushButton {
  padding: 64px 64px; }
)");

  QWidget w;
  QPushButton p(&w);
  QObject::connect(&p, &QPushButton::clicked, [](bool) { qDebug("clicked"); });
  w.show();
  return a.exec();
}