Images are displayed on intro screen in Photo Surface example when running the app on Boot2Qt device

Linux Ubuntu 22.04 
Qt Creator 12.0.0
Device: Raspberry Pi4 64 bit 

Steps to reproduce:

1. Open the example - https://doc.qt.io/qt-6/qtdoc-demos-photosurface-example.html
2. Run it on Raspberry Pi 4 64bit

Expected: Intro screen is shown with the backgorund image as it is on desktop.

Actual: The background is black. Images from home directory are displayed on the screen.

Reproducibility:  100%