Bletchleyite
Veteran Member
Vending machines should allow you to buy a ticket from anywhere to anywhere. I.e. at your last station enter the start location and pay for the journey.
Several TOCs, LNR/WMT included, have set their TVMs up to issue from any station of your choosing. This is therefore Northern's active decision, and is yet another piece of poor customer service on their part.
Yes, you could use it to take part in "dumbbelling", i.e. buying tickets just for the first and last bit, but you could do that online too.