Little project to simulate and demonstrate: https://jira.spring.io/browse/INT-4545
It sets up a simple message source, message handler and then via a service activator an outbound advice chain is added.
The advice chain returns a string and the test listens for messages on the advice output channel.
Spring integration 5.0.7.RELEASE the test passes.
Spring Integration 5.0.8.RELEASE it fails.