QStyleOptionProgressBar is not properly rendered by a delegate

I use QStyleOptionProgressBar in my Application to have a percent indicator in a Tree view. The code stopped working with QT 6.* . In QT 5.* the same code still works. Is this a bug or has something changed in the way delegate painting is handled?

The code is:
```
void InstrumentDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
                               const QModelIndex &index) const
{{{}}
  painter->save();  // Setup basic layout
  QStyleOptionProgressBar progressBarOption = {};
  progressBarOption.state = QStyle::State_Enabled;
  progressBarOption.bottomToTop = false;
  progressBarOption.direction = QApplication::layoutDirection();
  progressBarOption.rect = option.rect.adjusted(0, 0, 0, 0);
  progressBarOption.minimum = 0;
  progressBarOption.maximum = 100;
  progressBarOption.textAlignment = Qt::AlignCenter;
  progressBarOption.textVisible = true;  // Set the progress and text values of the style option.
  double percent = 50.0;
  progressBarOption.progress = (int)(percent);
  progressBarOption.text = QString::asprintf("%.2f%%", percent);  //painter->fillRect(progressBarOption.rect, QColor::fromRgb(255,0,0));
  QApplication::style()>drawControl(QStyle::CE_ProgressBar, &progressBarOption, painter);  painter>restore();
}
```
The result with QT6 (Style fusion):

The result with QT6 (Style windows): (Text missing, bar not at 50%)

The result with QT5:

I created a small reproducer:

qt_progress_bug.zip

My environment:
Fedora 39
QT 6.7.1 installed via the QT Maintenance tool.

QT 5 system version