No shadows visible in sandcastle

Hi, 
I wanted to try the SensorShadow, but I am not seeing any shading in the sandcastle. I do get an error:
`Primitive outlines disable imagery draping` 
I missing something here or is the code no longer working? 
Thanks in advance!

<img width="828" height="608" alt="Image" src="https://github.com/user-attachments/assets/716cbe20-7437-466b-a05a-a2df185de06c" />