can u check if switch type="server" works on your tabs ?
Please try with RichFaces 4.5.0.Beta1, and if you continue to observe this behaviour please report a bug in our issue tracker. Be sure to include some simple-as-possible sample code we can use tor reproduce the behavior.
I tried the application with WildFly 8.1.0.Final and RichFaces 4.5.0.Beta1.
Now the interaction of rich:tabPanel and rich:extendedDataTable is working fine!
SwitchType = "server" worked with Version 4.3.7.Final.