My MiL has this ancient deeply yellowed office grade HP laser printer she dug out as her document printer, it’s a tank and runs like a dream. Found that driver wise it seems to be easier to setup in Linux than windows, I keep meaning to setup a print server for her with an old pi I have…

That may actually be one of the weirdest issues I’ve ever heard of, were you ever able to figure out why it would only give you 2.5 pages?