Missing return type for the Periodic stored procedure invocation step

When I try to use create_lead function from demoData (https://github.com/syndesisio/syndesis/blob/1.12.x/install/operator/pkg/generator/assets/database/syndesis-db.yml.tmpl#L112) in Periodic stored procedure invocation step (create_lead->DM->add_lead), the Data Type of the started procedure is set to n/a so the DataMapped doesn't show any fields for mapping.

When I try to use the same function from demoData on Fuse Online 7.8 (which uses PostgreSql 10), the Data Type is set to create_lead Return so I see the fields in the DataMapper.

Same situation happens when I use the functions which are defined in the test suite (https://github.com/syndesisio/syndesis-qe/blob/1.12.x/rest-tests/src/test/resources/features/integration-database.feature#L37)