In my survival world with my friend, we had tamed and put saddles/armor on a bunch of horses. Thinking they would be safe from despawning, we were incredibly wrong, and once we got back into our server, we found out that ALL of them were gone. So, frustrated, we set out to find more. We tamed more horses, putting saddles on them, armor, and leashing them to fence poles. But unfortunately, they STILL were not safe from despawning, and later disappeared. This doesnt happen only to horses. This happened to our farm animals. All of our sheep and cows are gone. Even one of my dogs despawned. I am incredibly frustrated. In my creative server, I named a BUNCH of pandas, because naming prevents them from despawning... right? Wrong. They still despawned the next time I got into my server. I am sincerely hoping it's just a "beta" thing. I only have beta right now for foxes.