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Incorrect light updates outside of the chunk borders #3913

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Incorrect light updates outside of the chunk borders#3913
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S-needs-triageStatus: Needs triage

Description

@The-idk-notdot
The-idk-notdot
opened on Sep 18, 2026

Bug Description

LIght only updates in the chunk it was placed, and then proceeds to the bordering chunks. Occurs even when the chunk updates are set to immediate, with or without shaders.

Minecraft.2026.09.18.-.12.42.50.01.mp4

Reproduction Steps

  1. Enter the world with only sodium installed (iris is optional).
  2. Find a dark place with chunk borders near.
  3. Place a light source.

Log File

latest.log

Crash Report

crash-2026-08-07_11.38.28-client.txt

Activity

  1. The-idk-notdot
    added
    S-needs-triageStatus: Needs triage
    on Sep 18, 2026

  2. douira commented on Oct 4, 2026

    @douira
    douira
    on Oct 4, 2026
    Contributor

    Can you show us what this looks like without shaders, and in vanilla?

  3. The-idk-notdot commented on Oct 10, 2026

    @The-idk-notdot
    The-idk-notdot
    on Oct 10, 2026
    Author

    2. Can you show us what this looks like without shaders, and in vanilla?
    Without shaders:
    https://github.com/user-attachments/assets/5e052903-4044-447e-ba25-48a5e54aa27f
    Vanilla minecraft:
    https://github.com/user-attachments/assets/eea0d239-d5b7-4172-bde9-5581a373577b

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