Mailing list archive advanced search sort-by applies filters to results

Was using the mailing list archive search to find a mail that I know exists
(I have it in my inbox but wanted a link to it).

I started using the "Advanced Search" link that goes here:
https://www.postgresql.org/search/?m=1&ln=pgsql-announce

However, searching for "jdbc" with the default filters (i.e. "within the
last year") did not find the message. Changing the "Sort By" to "Date"
(from the default of "Rank") and the message appears. Nothing else was
different, just the intended sort order.

Sorting by "Rank" gives three messages.
Sorting by "Date" gives four messages.
Sorting by "Reverse Date" gives one message.

That doesn't seem correct. The sort should only change the order of the
filtered messages right?

Regards,
-- Sehrope Sarkuni
Founder & CEO | JackDB, Inc. | https://www.jackdb.com/