As the title suggests. I have a facade with clipping area, I have the exact same spline twice in the same spline shape but the second one isn't able to cut the holes out properly. See attached scene for problematic behaviour. I have this a lot but it's a hit and miss. The splines are always drawn perfectly flat. Only solution is to detach and clone the RC and use detached spline, but that's a shame, I like to keep my scenes light.