So basically this has happened at least 3 times already and really frustrates me. I play on a Minecraft realm server with friends and have captured villagers and stored them in this small hut where i used them to get mending etc. Everything is fine until i find the trade which satisfies me. About a day (in real life) after i start trading with these villagers, when I'm either offline, out of render distance or underground, all of the villagers suddenly disappear. There are no trace of them anywhere. I clearly know this is a bug because mobs cannot get to them and it cannot be trident drowned zombies as they have not spawned near my house once since the server has started. I have also searched online and everyone else has said it is a bug as well. This has happened at least 3 times already and I'm getting very upset. Could you please look into this bug and try to fix it. Thank you very much for taking your time to look at this.