Any CadLwPolyline with a coordinate of 0,0 ignores that point as valid coordinate. You can use the following example from another post to view the issue. This will render a triangle rather than a rectangle.
using (Cad…...kilburn February 6, 2025, 3:37pm 1 Any CadLwPolyline...oleksii.gorokhovatskyi February 6, 2025, 8:03pm 2 @kevin.kilburn , we...