I added https://raw.githubusercontent.com/chadmayfield/pihole-blocklists/master/lists/pi_blocklist_porn_top1m.list to the Settings > Block Lists and expect that sites like pornhub.com will be blocked
If I add pornhub.com to the Blocklist (wildcard) then I can confirm that pornhub.com is blocked. But I expect that it will be blocked using the gravity list.
The block list you referenced blocks "pornhub.com", but not "www.pornhub.com". These are two different domains and it is likely that the domain you were able to access was "www.pornhub.com." Here is a quick way to check your pihole.log and see if this is the case - this command will find every instance of "pornhub" in your log.
Actually I don't think the issue is about with/out WWW. Trying out sites listed on the above list, some of them that are blocked on Chrome I still can access through Firefox. How is that even possible?
Firefox has an option to run it's own filtering on it's own DNS. When you do this, your DNS traffic bypasses Pi-Hole. Check your Firefox options and disable this feature.
Hi @jfb would you please tell me which part of configuration is that? I search for DNS in Firefox settings and found only Proxy DNS when using SOCKS v5 and Enable DNS over HTTPS which both are unticked.