Hi,
Manually setting the detail rectangle to true should be possible with
procedure TForm1.TMSFMXTableView1ItemCustomize(Sender: TObject;
AItem: TTMSFMXTableViewItem; AItemShape: TTMSFMXTableViewItemShape;
AItemControlShape: TControl);
begin
AItemShape.ShapeDetailRectangle.Visible := True;
end;