ChunkLoadEvent and ChunkUnloadEvent never fire

[joshuaprince]

Expected behavior

ChunkLoadEvent and ChunkUnloadEvent should fire regularly as chunks load and unload.

Observed/Actual behavior

Starting in Paper 1.21 build 84 (Moonrise changes), ChunkLoadEvent and ChunkUnloadEvent do not fire at all.

Steps/models to reproduce

Test plugin:

    @EventHandler
    public void onChunkLoad(ChunkLoadEvent event) {
        // Does not fire
        getLogger().info("Chunk load " + event.getChunk().getX() + " " + event.getChunk().getZ());
    }

    @EventHandler
    public void onChunkUnLoad(ChunkUnloadEvent event) {
        // Does not fire
        getLogger().info("Chunk UNload " + event.getChunk().getX() + " " + event.getChunk().getZ());
    }

    @EventHandler
    public void onChunkLoadPlayer(PlayerChunkLoadEvent event) {
        // Works as expected
        getLogger().info("Chunk load PLAYER " + event.getChunk().getX() + " " + event.getChunk().getZ());
    }

    @EventHandler
    public void onChunkUnLoadPlayer(PlayerChunkUnloadEvent event) {
        // Works as expected
        getLogger().info("Chunk UNload PLAYER " + event.getChunk().getX() + " " + event.getChunk().getZ());
    }

    @EventHandler
    public void onPlayerMove(PlayerMoveEvent event) {
        // Works as expected
        getLogger().info(event.getTo().getX() + " " + event.getTo().getY() + " " + event.getTo().getZ());
    }

Plugin and Datapack List

No extra plugins or datapacks, test plugin only using an empty server folder.

Paper version

Custom build from build 89 44c3dd0 with only test plugin changes

ver
[21:41:35 INFO]: Checking version, please wait...
[21:41:35 INFO]: This server is running Paper version 1.21-DEV (2024-07-18T04:41:18Z) (Implementing API version 1.21-R0.1-SNAPSHOT)
You are running a development version without access to version information

Other

No response

[MagmaGuy]

+1, independently tested this for build #89 after a bug report from a user. My local was on #57 and the problem was not present there. It's a big one, hope it will get fixed soon.

[CatTeaA]

If the situation is true, according to your description, it would lead to the failure of the server's WorldGuard world protection, which indeed seems to be quite serious.
description