where clause on featureType doesn't work

With custom resolver for featureType, the following query return empty answer

query Genomes {
  genomes {
    sequences(where: { featureType: "Guide" }) {
      featureType
    }
  }
}

Cause is that featureType is not in neo4j db, but computed on the fly by a custom resolver.

Adding featureType as property in node will solve the issue.