Horses occur in only a particular area of the map, a "new" area, a long way from the "old" spawn area (10 minutes train ride (real-time)). Horses are brought back, and corralled within the walls of a building.
Whenever the server is updated (last two times) any horses currently in the "old" area disappear, however horses in the "new" area persist.
Other animals (at least chickens & pigs) do not disappear.
If the server is stopped and re-started, everything is preserved as expected. It is only on an upgrade this happens.
This happened both on the upgrade to 1.7.7 and 1.7.8.
It seriously curtailed my kids' horse breeding programmes. 😞
Environment
java -version
java version "1.7.0_55"
Java(TM) SE Runtime Environment (build 1.7.0_55-b13)
Java HotSpot(TM) Server VM (build 24.55-b03, mixed mode)
uname -a
Linux mediabox 3.2.0-61-generic-pae #92-Ubuntu SMP Tue Apr 1 00:10:04 UTC 2014 i686 i686 i386 GNU/Linux
java -Xmx1024M -Xms1024M -jar minecraft_server.jar nogui
[08:00:52] [Server thread/INFO]: Starting minecraft server version 1.7.8
Comments 6
Duplicate of MC-23320
This is not a duplicate of MC-23320 as it applies to only horses (at least not chickens & pigs).
It is not dependant on leaving the chunk, it is dependant only on upgrading the server.
If the server stopped && restarted, the horses behave as expected.
I have amended the description to reflect this.
Is this still a concern in the current Minecraft version? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases. If this has been done, we can reopen the issue.
Keep in mind that the "Resolved"-Status on this ticket just means "Answered", and that we are waiting for further information on whether this issue still exists or not. We will reopen it as soon as the requested information has been delivered.
Please let me know if you need the map uploaded.