Entries not synchronised with postgres

Dear team,

I have issues synchronising data with a postgres database. I have created a custom database and granted the user jabref uses create and usage on the public schema. jabref creates three tables (entry, field, metadata) but only entry is populated while the other stay empty. If I then close jabref and reopen the respective .bib file again, no data is shown (although the bib file has content).

I cannot see any error in the logs and no ‘insert’ statement for field and metadata seems to be issued on the server.

do I have a configuration issue?