The issue still has not been resolved and the thread is months old. The pigs glow red in the huts but there is no examine button to interact with. Therefore, I cannot move forward in the Quest. In reading other post on the subject, It appears that after saving the nut with the pig that if you leave town without examining the pigs, then there is a bug that popups. Additionally, The info that CD Project Red says it requires in order to post a bug report is a little unrealistic. I've played many hours since I first visited the town and no save files I have now will help them in the least.
The bottom line is "Fool's Gold" on PS4 has a "BUG". Fix it!