Maximized frameless window painting wrong view region with Qt::FramelessWindowHint and Windows api WS_THICKFRAME

When draw FramelessWindow using Qt6.6.1 with this method:

1. Set window flags through setWindowFlags(this->windowFlags() | Qt::Window | Qt::FramelessWindowHint)
2. Using windows api GetWindowLong and SetWindowLong add GWL_STYLE with WS_THICKFRAME | WS_MINIMIZEBOX | WS_MAXIMIZEBOX | WS_CAPTION | CS_DBLCLKS flags
3. Using native event WM_NCCALCSIZE to tell windows client rect

This method works fine with Qt <= 6.4.2, but in Qt6.6.1, the right and bottom exceed the drawable range.

This is a simple example window create with Qt6.4.2, it's correct

And this is the effect of the same code on QT 6.6.1, with both the right and bottom exceeding the drawable area.

When using the overloaded function changeEvent to print the geometry of the widget，it will get quiet different answer between these two version

Test Code:

void MainWindow::changeEvent(QEvent *e)
{
    if (e->type() == QEvent::WindowStateChange) {
        qDebug() << "Qt version =" << QT_VERSION_STR << "," << this->geometry();
    }
} 

With click custom maximize button twice, the result is:

This result can be reproduced both on Qt Cpp version and PyQt