I have a village compound/breeder that was working well before the village and pillage update but since that update, the villagers are latching onto workbenches that do not exist or are well out of range of the "village". If I had a workbench paired to a villager and the workbench gets destroyed the villager will trade until it's trades are depleted and lock up, still moving around and breeding but not able to trade any more. If the villager gets killed the workbench and bed that the villager was attached to do not pair with any remaining villagers that do not have a profession or bed.