It's not, I verified it now. When I open the project, everything seems to be ok but when I move the 3D vision the bug happens (only if the "food elevator" is visible)

Updating...
I discovered that the food elevator that was causing the bug. Now, I just wanna now why it's happening with it.

Hello guys,

I'm creating a planned kitchen in Sweet Home 3D and after open the project and change the vision in 3D everything change from grey to white like in the picture.
(sorry for my english, i don't know very well).
What could be doing this? Thank you!

The images are on my OneDrive at this ...