The project is model in Revit and taken via Datasmith link
The curved surface look as if they are being made from planes like (hexagone/octagone/polygon)
there comes a shadow imact on surfaces to look tiled vertically
Hello, this look like a bug to me, I would suggest that you use the "contact us" to report it to our support team.
Once submitted a support agent will contact you.
Thank you
MC