The framework we use for the demos is the same for both RadControls "Classic" and "Prometheus" so they should behave exactly the same and you should be able to select code from the tabs in both versions.
However, we have had a problem with one of the RadEditor "Prometheus" CSS classes which sometimes interferes with the framework we use for the demos. If I am not missing anything, in IE7 you are NOT able to select code from this example (Editor: http://www.telerik.com/DEMOS/ASPNET/Prometheus/Editor/Examples/Default/DefaultCS.aspx
), but you should be able to select code from here (Scheduler: http://www.telerik.com/DEMOS/ASPNET/Prometheus/Scheduler/Examples/BlackPearl/DefaultCS.aspx
The problem is fixed in the latest internal build (available also in the forums: http://www.telerik.com/community/forums/thread/b311D-baetth.aspx
) and will be officially released at the end of the week.
Please, let me know if I am missing anything or if you have any further questions.
the Telerik team