I don't know if you remember this one? TL;DR if use-application-dns.net is on a blocklist, the dnsmasq directive server= doesn't work anymore (mozilla requires the reply to be NXDOMAIN, nothing else). The solution is to have the server= setting and whitelist the domain. This has now been solved by having FTL provide the correct (NXDOMAIN) reply for the domain, regardles of adlist entries.
NOT sure the same aplies here, could you possibly test it? I've already added a server = and whitelist entry for both domains.
Again, cannot test, until my regular mac visitor drops by...