I am building an application with a large data set bound to a RadzenDataGrid with a local List. Sorting, and Filtering all work fine with Paging, but if I try to apply a Group, it simply groups the records on the current page. This is not the case in your Grouping API demo where groups span the entire data set irrespective of pages.
I have copied the Grid properties over from the demo to be sure of no differences, but still the same. Is this a limitation of binding to a local collection rather than using a direct DB connection via EntityFramework?