WebSphere & Struts2, not going to welcome file

All,

I have searched and researched and I cannot find what I am missing for migrating a existing project from Tomcat 7.x to WebSphere 8.0. I have created a work around for the problem but my curiosity is getting the better of me because I don’t understand the why. My problem is that when I first loaded the project to WebSphere I was getting There is no Action mapped for namespace [/] and action name [] associated with context path. I researched and found a couple of things to try. I added

com.ibm.ws.webcontainer.removetrailingservletpathslash=true
com.ibm.ws.webcontainer.mapFiltersToAsterisk=true
com.ibm.ws.webcontainer.invokefilterscompatibility=true

with no avail and ultimately I added an empty action that redirected to the welcome page and all was well. However, I personally view this as a work-around and not a fix. So, I guess my question is why does it not fall through to the welcome file list? Have I missed something in setting up/transferring the project? Am I misunderstanding how filters work?

I’ve included below my struts2 workaround, web.xml and the file structure. Thanks for anything you guys can help with.

JF

web.xml Snippit

<filter>
    <filter-name>struts2</filter-name>
    <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>    

<filter-mapping>
    <filter-name>securityContextFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

<filter-mapping>
    <filter-name>struts2</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

<welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
</welcome-file-list>

struts.xml snippit

<package name="dst" extends="struts-default" namespace="/">

<!-- Added as a workaround to the problem -->
<action name="">
    <result>/index.jsp</result>
</action>
</package>

File Structure being used

web
----WEB-INF
--------jsp (Folder holding jsps)
--------lib (Extra jars being used)
--------web.xml
----index.jsp

EDIT

As per request

Index.jsp

<%@ page language="java" import="java.util.*" %>
<%@ include file="/WEB-INF/jsp/include/taglib.jsp" %> 

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
    <head>
        <meta http-equiv="pragma" content="no-cache">
        <meta http-equiv="cache-control" content="no-cache">
        <meta http-equiv="expires" content="0">
    </head>

    <body>
        <div> Test Page</div>       
    </body>
</html>


Source: xml

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