Connector configuration property "database.out.server.name" is not relevant for Logminer implementation but cannot be omitted

According to the documentation the configuration property database.out.server.name is only relevant for the XStream implementation. So this property should not be mandatory if using the Logminer implementation. Actually it is mandatory in any case and my connector configuration JSON has to contain this line:

   "database.out.server.name" : "dummy",

Omitting the property completely causes following error:
2020-12-01 15:38:48,853 ERROR || The 'database.out.server.name' value is invalid: A value is required [io.debezium.connector.common.BaseSourceTask]

A few lines later a ConnectException with a stacktrace appears in the logfile.