That's actually a question better asked in the
JBoss forum. JBoss configures Tomcat in ways that cause Tomcat to appear as a more unified part of the JBoss system.
The secret of how to be miserable is to constantly expect things are going to happen the way that they are "supposed" to happen.
You can have faith, which carries the understanding that you may be disappointed. Then there's being a willfully-blind idiot, which virtually guarantees it.