Exactly, even in revit 2025 it's worse...
Screenshot of surface in C3D:
Result in Revit 2025.4
The Surface also looks fine in ACC after publishing from Civil 3D. So the issue is really a Revit matter.
Those problems didn't exist when using Toposurfaces.
It would be nice to give (back) the choice whether you want to link topography as a Toposolid, but also as a Toposurface.
The actual solution doesn't work anymore. This is a major issue!!!
Thanks for considering this