Villagers have stopped changing their jobs. Specifically cured zombie villagers. When they turn into a villager they automatically have a random job, putting down any table doesn't change their job at all. Also they don't link up to an already placed table. If I trade with one of them until they are out of something they don't replenish any of their stuff at the table they just sit their. They have worked in the past and it hasn't stopped working across updates it just happened recently.