Java serialization disabled for EventSourcedBehaviorTestKit

I am trying out EventSourcedBehaviorTestKit using documentation as a guidance. I used following configuration ScalaTestWithActorTestKit(EventSourcedBehaviorTestKit.config) which uses DisableJavaSerializer due to akka.actor.allow-java-serialization = off which requires me to override the config in order to test without having to specify serializer. Currently I am having to do below in order to use JavaSerializer. Is this behavior expected? What is an expected configuration for this type of test?

    class SomeSpec extends ScalaTestWithActorTestKit(
      ConfigFactory.parseString("""
    akka.persistence.testkit.events.serialize = off
    akka.actor.allow-java-serialization = on
    """).withFallback(PersistenceTestKitPlugin.config){

You can simplify the config a bit by using:

    class SomeSpec extends ScalaTestWithActorTestKit(
      ConfigFactory.parseString("akka.actor.allow-java-serialization = on")
        .withFallback(EventSourcedBehaviorTestKit.config){

That Config is internally passed to ActorTestKit's constructor so any configuration you need you should add here. I use this to set Jackson serializer in my test.