Somehow I just noticed that on 0.6.0 Birefnet is not working, therefore it produce flat image.
On 0.5.4, birefnet is working on CPU although in some cases caused crash on my PC, but at least it successfully produce 3D image.
Here's the image comparison:
Created on 0.6.0 (Flat image-birefnet not working)
While, this one is from 0.5.4 (successfully created 3D model)

Somehow I just noticed that on 0.6.0 Birefnet is not working, therefore it produce flat image.
On 0.5.4, birefnet is working on CPU although in some cases caused crash on my PC, but at least it successfully produce 3D image.
Here's the image comparison:
Created on 0.6.0 (Flat image-birefnet not working)
While, this one is from 0.5.4 (successfully created 3D model)