Resolves https://github.com/spring-projects/spring-integration/issues/3620 Shared session field was captured outside of the lock, causing multiple sessions in a multi-threaded environment. **cherry-pick to 5.4.x, 5.3.x**
Resolves https://github.com/spring-projects/spring-integration/issues/3620 Shared session field was captured outside of the lock, causing multiple sessions in a multi-threaded environment. **cherry-pick to 5.4.x, 5.3.x**