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.

<r>Hello guys,<br/>
<br/>
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.<br/>
(sorry for my english, i don't know very well).<br/>
What could be doing this? Thank you!<br/>
<br/>
The ...