Reporting Services: Tablix RepeatColumnHeaders doesn't work on some reports

Question

So I\'ve got various reports that consist of a DataSet rendered in a Tablix... pretty garden variety stuff. There is a property for the Tablix control named RepeatColumnHead

Answer 1

I am adding some screenshots from my SSRS 2012 server..

Now, click on the "(Static)" under "Row Groups" and presss F4.

Also read TechNet - SSRS: How to Repeat Headers on Each Page