I use the component rich:tabPanel as follows:

<rich:tabPanel switchType="ajax">
 <rich:tab label="Fixed Line Numbers">
 <ui:include src="/pages/flnsTable.xhtml" />
 </rich:tab>
 <rich:tab id="simcardsTab" label="Simcards">
 <ui:include src="/pages/simcardsTable.xhtml" />
 </rich:tab>
 </rich:tabPanel>

The values of the 1st column of the 1st tab are not displayed. The same is true if I switch the tabs, i.e.:

<rich:tabPanel switchType="ajax">
 <rich:tab id="simcardsTab" label="Simcards">
 <ui:include src="/pages/simcardsTable.xhtml" />
 </rich:tab>
 <rich:tab label="Fixed Line Numbers">
 <ui:include src="/pages/flnsTable.xhtml" />
 </rich:tab>
 </rich:tabPanel>

But it seems that the table of the 1st tab can be sorted by the 1st column.

BTW, 'flnsTable.xhtml' and 'simcardsTable.xhtml' use the rich:extendedDataTable component.

And, if I remove a tab, i.e.

<rich:tabPanel switchType="ajax">
 <rich:tab label="Fixed Line Numbers">
 <ui:include src="/pages/flnsTable.xhtml" />
 </rich:tab>
 </rich:tabPanel>

the values of the 1st column of the 1st tab will be displayed. STRANGE!