Cannot set *.jsf as a welcome page in web.xml in JBoss EAP 6

Issue

• JBoss doesn't handle welcome files for JSF. It should render my index.jsf, but it just doesn't. I get a blank page.
• Steps to reproduce:
  • deploy
  • go to /welcome-bug/
  • jboss show you a 404 page: JBWEB000065: HTTP Status 404 - /welcome-bug/
  • go to /welcome-bug/index.jsf
  • it displays the page, so servlet mappings are ok.

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
    <servlet>
        <servlet-name>Faces Servlet</servlet-name>
        <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>Faces Servlet</servlet-name>
        <url-pattern>*.jsf</url-pattern>
    </servlet-mapping>
...
    <welcome-file-list>
        <welcome-file>index.jsf</welcome-file>
    </welcome-file-list>
</web-app>