It's more complicated than that. See
https://forums.mirc.com/ubbthreads.php?ubb=showflat&Board=8&Number=229619#229603.
If you set "Prioritize IPv6 addresses", you've enabled IPv6 priority mode-- this includes priority mode for /server and /dns commands. The short changelog entry omits this extra logic, because it's not common, and the full explanation would have made for a wordy entry.
Things get even more complicated for hosts that have no A entries, by the way-- I think that changelog entry also does not take that into account either, because that is even
less common.
