Offset curve on surface issue

Hi all,

I’m always facing troubles with this component, I’m sure that I’m doing something wrong but don’t know what.
I tried to flip the curve but getting similar results.

Any help will be very much appreciated,

offset on (4.4 KB)

Please upload GH file with internalised data.

Hi Dowazura;

my bad, now I uploaded with inte

rnalised data;