I am using slf4j 1.7.31 and logback 1.2.3 to log messages in a application for Apache Tomcat. I added the annotation @WebListener to one class, which handle various tasks on start/shutdown of the application. Here are the important parts of this class:

@WebListener
public class AutoLoad implements ServletContextListener {

	private static final Logger log = LoggerFactory.getLogger(AutoLoad.class);

	public void contextInitialized(ServletContextEvent event) {
		log.info("Starting {}", APP_NAME);
	}

	public void contextDestroyed(ServletContextEvent event) {
		log.info("Shutting down {}", APP_NAME);
		if (LoggerFactory.getILoggerFactory() instanceof LoggerContext) {
			((LoggerContext) LoggerFactory.getILoggerFactory()).stop();
		}
	} 
}

I always see the starting-message. But since some versions of logback I no longer see the shutdown-message. It still works, if I replace logback with slf4j-simple.

This is possibly related: I had to add this line
> LoggerFactory.getILoggerFactory()).stop();
because I suddently got warning on shutdown.

Edit: According to our Jira, I added an issue for this on 28/Mar/17 11:57 AM, but didn't had time yet to report this to you.