Hi Allan,
Welcome to the forum!!
I’ve just tested one from stock and can confirm that the pins are shorted - this seems intentional(part of the RJ45 connector itself) as the MagJack breakout seems to be exclusively for use in an Ethernet system (to get communications to a microcontroller or SBC).
I’ll jot down a note so that we get the product page updated and make it cleared up for future makers.
I’ve just shot through an email so we can get your project back on track!
Liam.
