Qt3D example camera position

I just tried running the simple-cpp Qt3D example on macOS (BigSur) with Qt 5.15.1. Building and running the example both work fine, but the origin (0,0,0) of the 3D scene is always located in the right upper corner (see attached screenshot). Not sure if this is a bug. I had the same problem on Catalina. Win10 and Linux work fine and the origin lies in the center of the widget.