QGraphicsView: Embedding a GraphicsView that has QGraphicsProxyWidget inside another QGraphics view is not updated correctly.

Create a QGraphicsView and add QGraphicsProxyWidget to the scene, then add this QGraphicsView as a proxy item in another scene.

Then the items will not be painted correctly.

I have attached a small example that illustrates this issue.
When you run the example, resize the window to see the painting issue better.