Hi Jamal,
According to inspection with the Data Inspector, the polygon seems to contain an unexpected vertex (0, 0). I don't know why AutoCAD doesn't draw it (might ignore invalid vertices automatically?), but the SpikeRemover can be used to remove it. And then, check again whether the repaired geometry is correct.
FME provides some transformers to validate and / or repair geometries. e.g. the GeometryValidator, SpikeRemover etc.. In general, when you encountered strange shapes, consider using them.
Takashi
Many thanks Takashi for the help. The “SpikeRemover ” works fine.
Best
Jamal
