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  1. Minecraft: Java Edition
  2. MC-143011

Certain chunks cannot spawn mobs (hostile or otherwise)

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    Details

    • Type: Bug
    • Status: Open
    • Resolution: Unresolved
    • Affects Version/s: Minecraft 19w04a
    • Fix Version/s: None
    • Labels:
      None
    • Environment:

      Java version is up to date, 1.8.0_171-b11. Windows 10, multi-core laptop.

    • Confirmation Status:
      Unconfirmed
    • Category:
      (Unassigned)

      Description

      Certain chunks are outright incapable of spawning mobs. These chunks appear in groups, rather than being isolated. Attached is a screenshot displaying several fenced-in chunks, the ones marked with Netherrack (red rock) are capable of spawning mobs while the chunks marked with Glowstone cannot spawn any mobs at all. Height in the Y axis has no effect. This affects older worlds as well as new; it is likely responsible for numerous mob farms breaking. Passive, hostile, and environmental mobs are all affected.

      Pack-spawning may also have an increased effect; leaving only a small area for spawning reduces spawn rate significantly more than expected. Even the fence I put in drastically reduced the amount of mobs that would spawn.

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              • Assignee:
                Unassigned
                Reporter:
                The_Endgineer Jacob Andrew Jagiella
              • Votes:
                6 Vote for this issue
                Watchers:
                2 Start watching this issue

                Dates

                • Created:
                  Updated: