multiple QPainter::drawImage() calls are broken when OpenGL is used

When multiple subsequent QPainter::drawImage() cals are made to a QOpenGLWidget based QGraphicsView, only the first image is rendered.

See the attached example that renders a big image (my samples are > 8192x8192) tiled to the QGraphicView's background. When QOpenGLWidget is used, only the first tile is rendered on Windows. On Linux, the rendering works fine (tested on 2HW configurations Nvidia & AMD). Without OpenGL, the example works on all platforms.