The actual version of the solace-spring-cloud-bom 2.5.0 contains spring-cloud-function-context 3.2.9 which contains a System.out.print.
Could you provide a version where the version 3.2.10 of spring-cloud-function-context is referenced, there the problem is fixed.
Case:
Publish a message over StreamBridge
Result:
Every published message will be logged, e.g.
Invoking function: streamBridge<org.springframework.messaging.Message<java.lang.Object>, org.springframework.messaging.Message<java.lang.Object>>with input type: org.springframework.messaging.Message<java.lang.Object>