In multiplayer mode, sending an entity through a nether portal makes nearby monsters despawn in the overworld, if there is another player at a distant place in the overworld.
How to reproduce:
Play in multiplayer mode
Build a new nether portal (for example, at (10000, 100, 0) in the overworld)
Place another player at a distant place (for example, (10000, 100, 10000))
Summon monsters near the portal (at the overworld), surrounding them by fences
Go into the portal
Go back to the overworld and confirm the monsters are still there
Go to the nether again
Throw an item into the portal
Again go back to the overworld, and confirm the monsters have disappeared.
(Try again 4-9 without any other players in the overworld)
(Confirm the monsters are still there after throwing items)
I understand that this is caused by chunk loading triggered by the thrown item, but the chunk loading should be work somewhat like spectator mode, which does not make monsters despawn.
We do not have enough information to find the cause of this issue.
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This issue is being temporarily closed as Awaiting Response. Once the requested information has been delivered, the report will be reopened automatically.
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