Reverse DNS lookup by hostname STILL not working in v18

In v17, there was a feature request in the system for over 3 years that simply asked if we could get hostnames in reports instead of IP's to make it easy to lookup threats where they reside. It was once said that it was possible by Alan, but it never did work, there's lots of comments in there saying it never works.

Well, it still doesn't work in v18 either. Even with Reverse DNS lookup turned on, and the hostname added manually to the DNS section.

Even with the ip of the firewall in the DNS setting in network.