QTableWidget foreground / font color cannot be set via palette on Win11

When trying to set the font/foreground color in QTableWidget via Palette (see TableColor.zip),
either for all entries

    QPalette pal=table1->palette();
    pal.setColor(QPalette::ColorRole::Text, QColor::fromRgb(255,0,0));
    table1->setPalette(pal);

    for(int i=0;i<rowTexts.size(); i++)
    {
        QTableWidgetItem* item = new QTableWidgetItem(rowTexts[i]);
        table1->setItem(i,0,item);
{{    }}}

or single cells

    for(int i=0;i<rowTexts.size(); i++)
    {
        QTableWidgetItem* item = new QTableWidgetItem(rowTexts[i]);
        item->setForeground(QColor::fromRgb(i*60+80,0,0));
        table2->setItem(i,0,item);
{{    }}}
   
this has no effect on Windows 11 (see TableColor_Win11_not_ok.png), the text stays black.
On Windows 10 everything is ok (see TableColor_Win10_ok.png).

In fact, the problem occurs only in the combination Qt6(.7.2) + Win11 + Palette.
With Qt5 or Win10 or StyleSheets, it works. Unfortunately, setStyleSheet() is not available for table items.