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MC-189415

Lighting still does not update properly when inserting blocks using /fill or structure blocks

The bug

When you use the /fill command to create a room, or use a structure block to load a structure, the lighting will not properly update inside of the structure.

To reproduce

  1. Go into the sky

  2. /fill ~ ~ ~ ~15 ~15 ~15 minecraft:white_concrete hollow

  3. Enter the concrete cube
    → ❌ Occasionally the room will be partially bright inside. If you open the F3 screen you can see that the client and server light values do not match.

Linked issues

Attachments

Comments

migrated

Cannot reproduce in 1.16-rc1 using the command you put in the descripition after trying a dozen times on multiple test worlds.

migrated

(Unassigned)

Confirmed

Normal

Lighting

1.16 Pre-release 5, 1.16 Pre-release 6

Retrieved