There is a glitch with horses and creepers. I had two horses wearing diamond armor and a saddle. I logged off and when I came back there were 50ish horses. A similar issue happened with creepers. Screenshots are attached.
The game was played by two people via the in game LAN server.
MC-23557
Horse and Creeper duplication
Resolved
Invalid
0
This ticket is invalid as it relates to a modded or 3rd party client/server.
Any non-standard client/server build needs to be taken up with the appropriate team, not Mojang.
Any plugin issues need to be addressed to the plugin creator.
This site is for addressing issues related to the base unmodded Minecraft