construction line does not obey normal line.

 From:  niko (NICKP100)
construct any rounded solid or curved surface and try to draw a curve originating from it.
Starting from the first point there exists an option to draw the next point based on the normal.
So far so good, but there's two problems.
1. after the second point you cannot draw the next one based on normal.
2. you cannot draw a construction line based on the normal.