I don't understand what happens here

I modified the structures to add an extended properties reportable to the tables
I added the extended propperties reportable and sortable to the fields

I validated the database (SDT)
I regenerated the RepMeta table (SFR)

I defined the fields that are supposed to be filterable. That works fine in the reports wizard when I launch my app.

But the thing that I don't get is that I don't have access to the page that should let me define the sort done on the data. Even if some fields have been defined as sortable on the table used for that report.

What am I missing? I there another place I should modify something?