Why does the lighting and shadows change in the top-down view when scrolling in the perspective view?

This is with Isaac Sim 5.1
Why does the lighting and shadows change in the top-down view when scrolling in the perspective view?

This is with Isaac Sim 5.1
Hi, can you provide the USD for this scene please?
The scene can be found here:
test_scene.zip (5.6 KB)