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  1. Minecraft: Java Edition
  2. MC-156880

Mobs spawn where they should not be able to after using /fill

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Details

    • Bug
    • Status: Open
    • Resolution: Unresolved
    • Minecraft 1.14.3, Minecraft 1.14.4 Pre-Release 6, 1.14.4, 19w34a, 19w35a, 19w45b, 19w46b, 1.15 Pre-release 6, 1.15, 1.15.1 Pre-release 1, 1.15.2, 20w06a, 20w07a, 20w16a, 1.16 Pre-release 5, 1.16.1, 1.16.2, 1.16.4, 20w48a, 1.17.1
    • None
    • None
    • Community Consensus
    • (Unassigned)

    Description

      The bug

      Chunks check mob spawning conditions after removing blocks replaced with /fill BUT before re-calculating light levels: therefore, mobs will spawn in what should be broad daylight after /fill-ing a large area

      How to reproduce

      1. Create a superflat world and stand on the ground
      2. Type /fill ~100 ~1 ~100 ~-50 ~1 ~-100 stone
      3. Spam /kill @e[type=!player] until most things are dead
      4. Type /fill ~100 ~1 ~100 ~-50 ~1 ~-100 air
        You will see hostile mobs spawning around you even when it has sky access.

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            Unassigned Unassigned
            Nixinova Nixinova
            Votes:
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            Dates

              Created:
              Updated:
              CHK: