This despawn zone is linked to either portal location (less likely) or world spawn.
We have a large world where the farms close to world spawn have had animals (and paintings, as mentioned) despawned several times. Most recently, a safety ark was created at chunk 12, -3 and these animals still despawned. There is another farm at chunk -30, -21 which was safe from the despawn.
The main portal is located fairly close to world spawn, so it's difficult to isolate where the despawn zone is centred, but I would imagine it is world spawn.
I guess your best bet for now is to have your farms at least 20 chunks away from world spawn until this gets fixed.
Steve McKay
This despawn zone is linked to either portal location (less likely) or world spawn.
We have a large world where the farms close to world spawn have had animals (and paintings, as mentioned) despawned several times. Most recently, a safety ark was created at chunk 12, -3 and these animals still despawned. There is another farm at chunk -30, -21 which was safe from the despawn.
The main portal is located fairly close to world spawn, so it's difficult to isolate where the despawn zone is centred, but I would imagine it is world spawn.
I guess your best bet for now is to have your farms at least 20 chunks away from world spawn until this gets fixed.