[MC-75170] Horses disappeared

I play the same world all the time and memorized where the horses spawn. So this time when I restarted my world over, all the horses were gone. All other mobs have soawned. No horses at all.

Environment

MacBook Pro
2.9GHz Intel Core i7
Intel HD Graphics 4000 1024 MB

Linked issues

duplicates 1

MC-23320 Passive mobs despawn when you leave the chunk. Resolved

Comments 2

migrated 2014-12-10T01:41:14Z

What do you mean ? Using the same seed in 1.8.1 does not spawn horses like previous versions ?
Because world generation is not exactly the same from one version to another. For example, even if 1.8 had no new biomes, the 3 new types of stones are now influencing most of generated terrain, but with minimal visible differences from the outside.

migrated 2015-08-12T04:04:31Z

Ever since I first had horses I've kept them in stables and 'ranches' all over my world and all my tamed horses have stayed there no matter how far I went. With the new update I stabled a tagged, armored, saddled horse and when I left it to work nearby I returned and it had vanished completely.