Hi! I have been fiddling around with one of your samples: WinFormsExtendedViewExample I have noticed that one my hatches is drawn a bit incorrectly: https://pasteboard.co/I8gitYx.png The correct boundary would be the green polycurve (which I have generated with AutoCAD 2018 from the hatch). The hatch uses PolylineData to define its contour. I attach the DWG file. Is this a bug or it can be a problem with my rendering settings (remember I used the sample renderer).