generation is not incomplete

I run the FRONT3D-demo data, but the results are incomplete. Is it right ?

![Image](https://github.com/user-attachments/assets/a372acd3-8f51-483e-85fc-a3b72cdd3dd5)

this image only generate a chair:

<img width="135" height="208" alt="Image" src="https://github.com/user-attachments/assets/4869c177-b28a-4f47-993f-38ab0237a977" />