What Debezium connector do you use and what version?

Oracle Debezium Connector 2.5.3.Final

What is the connector configuration?

What behaviour do you expect?

Upgrade from 2.5.3.Final to 2.6.1.Final and the connector starting up and running as before.

What behaviour do you see?

When upgrading, the connector tries to register schemas that are not backward compatible. The connector does not start up as expected.

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

2.6.1.Final is the latest released version