Domain tab in Top Sources shows 'No Entry found' but 'Application' shows proper results

The image in the screenshot below is what I get when filtering in fortiview with an specific user name, it looks right, but I would like to get more detail on the blocked 443/udp, for that I'm going to the domain tab (the right one), but in there there's only a text telling me 'No Entry found', shouldn't there be results in that tab? What's the use for this then?