Note: This is related to MCPE-16291 which is marked as fixed in October. But either the underlying problem of that bug is not fixed or this is another issue.

Bedrock Edition - Realm server - Xbox One & PC

Right now, hostile mobs to not despawn. You can travel far away from the chunk or leave the realm and hostile enemies will never despawn. This is game breaking for any users who use mob farms or for any users who need to kill certain mobs for items.

To Reproduce:
1. Capture a few mobs and block them with light to keep other mobs from spawning in the area.
2. Use the usual methods which normally make the game despawn mobs.
3. Return to the area.

Result:
Mobs are still present. They have not despawned. Mob cap gets reached, no other mobs spawn.

Expected:
Mobs to follow specified game rules despawning where appropriate.