On my server I run a pet shop. I did the same thing on the server before the world reset, however I specialized in selling just ocelots since not many people had cats. In this new world (1.10 upgrade from the 1.9 old world) I named a ocelot for my shop, and came back just now to find that she had disappeared. Last night she was there, but is now gone. The holding spot was not tampered with, nor was a butcher command executed at any time. The ocelot was named, and yet still despawned. This is rather irritating, especially on top of the fact that in 1.10 (thanks to another bug) I can no longer leash ocelots to pull them to my store, and had to pen it up in the first place because I couldnt transport it. That was my very last name tag and now it and my ocelot have gone up in smoke.