Details of deployment:
showcase built with servlet-profile from ICEfaces EE-3.3.0 maintenance branch r44538, or using showcase.war from the Jenkins Build 01.
A weblogic.xml file containing only the following was added to the WEB-INF folder inside the .war file
<weblogic-web-app xmlns="http://www.bea.com/ns/weblogic/weblogic-web-app">
   <container-descriptor>
<prefer-web-inf-classes>true</prefer-web-inf-classes>
   </container-descriptor>
</weblogic-web-app>

The showcase application loads but when trying to navigate to any demo using the links in the application there is Error 500--Internal Server Error.
If using the actual URL of a demo directly, such as (http://ec2-54-184-121-30.us-west-2.compute.amazonaws.com:7001/showcase/showcase.jsf?grp=aceMenu&exp=dataTableBean) the demo will load and function as expected.

Error 500--Internal Server Error
java.util.ConcurrentModificationException
   at java.util.LinkedHashMap$LinkedHashIterator.nextEntry(LinkedHashMap.java:373)
   at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:392)
   at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:391)
   at java.util.AbstractMap.equals(AbstractMap.java:420)
   at java.util.Collections$SynchronizedMap.equals(Collections.java:2020)
   at com.sun.faces.context.SessionMap.put(SessionMap.java:138)
   at com.sun.faces.context.SessionMap.put(SessionMap.java:61)
   at com.sun.faces.renderkit.ServerSideStateHelper.writeState(ServerSideStateHelper.java:243)
   at com.sun.faces.renderkit.ResponseStateManagerImpl.writeState(ResponseStateManagerImpl.java:122)
   at com.sun.faces.application.StateManagerImpl.writeState(StateManagerImpl.java:113)
   at com.sun.faces.application.view.WriteBehindStateWriter.flushToWriter(WriteBehindStateWriter.java:225)
   at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:464)
   at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:125)
   at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:286)
   at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120)
   at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
   at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
   at javax.faces.webapp.FacesServlet.service(FacesServlet.java:594)
   at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
   at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
   at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:301)
   at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
   at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
   at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
   at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
   at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3730)
   at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3696)
   at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
   at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
   at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2273)
   at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2179)
   at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1490)
   at weblogic.work.ExecuteThread.execute(ExecuteThread.java:256)
   at weblogic.work.ExecuteThread.run(ExecuteThread.java:221)