Wrong tables shown in Postgres databases

[bebr43]

I installed dbeaver-ce-24.3.4-x86_64-setup.exe on my Win-10 laptop in order to connect to a Debian (Bookworm) Postgresql-Server (version 15.10) on my local 172.. network.
Under connection settings I entered the "test2" database as "Database/Schema", which contains just one table "b2".
The connection works, and dBeaver shows all twelve databases on the server.
BUT - in each database only one table is shown - b2 (in the "public" schema), the one from the test2 database.
The correct table structure is visible via psql on a linux terminal, or phppgadmin via web browser.
Looks like a bug to me, but maybe there are some specialities in the dBeaver connection setting or "driver properties" that this forum might know.

Update: I just experience a similar error in another DB schema editor, SQL Power Architect: DB names are shown correctly, but no tables inside. This tool also uses a JDBC driver, albeit a slightly different version - so the problem is likely on this layer.
Hints are welcome.