p:datatable f:facet name="output" does not display - jsf

Question

Some basic information:
- Primefaces Version: 5.3
- Primefaces Extension Version: 3.1.0
- Java Server Faces: 2.0
I try to display a editable table but somehow the rows aren't displayed properly - you don't see any value but if you click the text input field appears with the right value which is weird...
The xhtml file
I deleted some things from the source (replaced with -)
<ui:composition template="WEB-INF/views/templates/userTemplate.xhtml" xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://java.sun.com/jsf/html" xmlns:ui="http://java.sun.com/jsf/facelets" xmlns:f="http://java.sun.com/jsf/core" xmlns:p="http://primefaces.org/ui"
xmlns:pe="http://primefaces.org/ui/extensions">
<ui:define name="content">
<p:dataTable id="dataTable" var="oe" rowKey="#{oe.id}" value="#{showSomethingMgdBean.allUser}" lazy="true" editable="true" editMode="cell" widgetVar="cellCars">
<p:column headerText="id" style="text-align: center;">
<p:cellEditor>
<f:facet name="output">
<h:outputText value="#{oe.id}" />
</f:facet>
<f:facet name="input">
<p:inputText id="modelInput" value="#{oe.id}" style="width:96%" />
</f:facet>
</p:cellEditor>
</p:column>
<p:column headerText="-">
<h:outputText value="#{oe.-}" />
</p:column>
<p:column headerText="-">
<h:outputText value="#{oe.-}" />
</p:column>
<p:column headerText="-">
<h:outputText value="#{oe.-}" />
</p:column>
<p:column headerText="-">
<h:outputText value="#{oe.-}" />
</p:column>
<p:column headerText="enabled">
<h:outputText value="#{oe.enabled}" />
</p:column>
<p:column headerText="expired">
<h:outputText value="#{oe.expired}" />
</p:column>
<p:column headerText="locked">
<h:outputText value="#{oe.locked}" />
</p:column>
<p:column>
<p:rowEditor />
</p:column>
</p:dataTable>
</ui:define>
</ui:composition>
If you need more informations let me know. Maybe it's because of my the xhtml / jsf declaration at the beginning of the file?
<ui:composition template="WEB-INF/views/templates/userTemplate.xhtml"
xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:p="http://primefaces.org/ui"
xmlns:pe="http://primefaces.org/ui/extensions">

Answer 1

I had the css and javascript files of prime-ui integrated aswell as the primefaces things in tomcat so i guess the prime-ui files had the other files overwritten and therefor i couldnt use some features of primefaces or atleast it was messing with the css. So i deleted all custom css things like #Kukeltje mentioned in the comments and it worked! :D