UPDATE: Did a bit more testing, and while the problem isn't as bad as it used to be, I'm still noticing somewhat of an obsession with the snack machine, even when Sims have full hunger. Although it seems to have at least been tweaked to where the simoleons will be refunded if I cancel the action, they still consistently want to purchase sodas upon first arriving at work and throughout the work day. Yes, specifically sodas.
It's still a thing. My current family has a son that has done the doctor's career for this past month (he's now top level) and if/when I would go with him, that attraction to the snack machine is strong in him. No glutton trait (he's genius, mean, materialistic). One little notch of hunger on his bar gone and he's wanting that snack, no matter what he's doing. IDK what the gurus are putting in those machines, but it must be something good. :D
Also, something maybe related (? not sure), I recently built a library and put a vending machine in the 'break room' area. When I playtested the build, the sims would queue up the food action, the money would be deducted and the queue would drop entirely. I'd get out and reload only to see a bunch of sandwiches in the fridge. Now, if I'd direct the sim to purchase a sandwich (watching like a hawk), they'd get it just fine. They'd sometimes would put the sandwich down and forget to eat, but don't think that's related. ?!?
