As I bred a villager and travelled far from the nearby village I was trying to get a mending trade by breaking the lectern trying to get lucky and get that trade repeatedly the villager glitches out not excepting the lectern and not making new trades and turning his head strangely this happened to me 4 times and I couldn't use the villagers because he couldn't except any other jobs please address this issue I hope I mentioned enough information to your good selves to fix this issue. Also, I am not a new player and I never had this problem.