When declaring the ICEfaces compat component namespace in the xhtml page but not including the required Jar files the following error is thrown in EE 3.3.0 (The same setup is not an issue with EE 3.2.0):

java.lang.RuntimeException: Cannot clone document
at org.icefaces.impl.context.DOMResponseWriter.cloneDocument(DOMResponseWriter.java:494)
at org.icefaces.impl.context.DOMResponseWriter.startSubtreeRendering(DOMResponseWriter.java:486)
at org.icefaces.impl.context.DOMPartialViewContext.processPartial(DOMPartialViewContext.java:158)
at javax.faces.component.UIViewRoot.encodeChildren(UIViewRoot.java:973)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1779)
at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:413)
at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:124)
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 com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1657)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:939)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:502)
at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:181)
at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:91)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:864)
at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1592)
at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:186)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:452)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:511)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:305)
at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:83)
at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)
at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)
at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1613)
Caused by: java.lang.NullPointerException
at org.icefaces.impl.fastinfoset.com.sun.xml.fastinfoset.util.NamespaceContextImplementation.declarePrefix(NamespaceContextImplementation.java:163)
at org.icefaces.impl.fastinfoset.com.sun.xml.fastinfoset.dom.DOMDocumentSerializer.serializeElement(DOMDocumentSerializer.java:142)
at org.icefaces.impl.fastinfoset.com.sun.xml.fastinfoset.dom.DOMDocumentSerializer.serialize(DOMDocumentSerializer.java:78)
at org.icefaces.impl.context.DOMResponseWriter.serializeDocument(DOMResponseWriter.java:546)
at org.icefaces.impl.context.DOMResponseWriter.cloneDocument(DOMResponseWriter.java:491)
... 30 more