P_h_i_l has uploaded a patch.
Description:
Here's the diff against the FeatureSetExt.cs that I patched:
335a336
> result.FeatureType = other.FeatureType;
351,355c352
< IFeature test = other.Features[i].Intersection(union, result, joinType);
< if (test.BasicGeometry != null)
< {
< result.Features.Add(test);
< }
---
> other.Features[i].Intersection(union, result, FieldJoinType.LocalOnly);