I am part of a realm that has been extremely buggy lately. The villagers keep disappearing. To solve the issue I named them and secured them where no zombies can get them and locked them into their jobs. And just to be safe, i also sleep every night so mobs don't spawn. But when I leave the village and come back or save and log back in, I  will notice some villagers are missing even though they were named and made unable to escape.This is messing up some of the farms we have made in the realm because the villagers that worked the field keep disappearing and villagers that we established a max level trade with have disappeared. The person who owns the realm has backed it up when this happens but it never solves the issue and we end up just having to breed more villagers but that is getting to be annoying to do everytime we leave the Village.