repro w/ docker-compose and steps to reproduce

https://github.com/lucasprograms/kafka-debug

What Debezium connector do you use and what version?

Postgres, version 1.8 (tested w/ 1.9 and found same issue)

What is the connector configuration?

see repro link above

What is the captured database version and mode of depoyment?

postgres 12, docker

What behaviour do you expect?

2 connections per connector

What behaviour do you see?

4 connections per connector

Do you see the same behaviour using the latest relesead Debezium version?

yes