It’s neverending story
I found quite funny thing.
While generating DDL for selected schema (schema chosen in What To Generate tab), I got functions from this schema generated as expected.
But if I additionaly select a workspace in Select List, then even if those functions are still selected on functions list, none of them will be generated to DDL.
Since functions are not connected with workspace in any way, I consider it as a bug.
To be honest I would like to see some day export section to be reworked from scratch. There is a lot of inconsistency.