Details
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Type:
Bug
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Status: Reopened
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Resolution: Unresolved
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Affects Version/s: 20w08a, 20w12a, 20w15a, 20w17a, 20w19a, 1.16 Pre-release 2, 1.16.2 Release Candidate 2, 1.16.2, 1.16.3, 1.16.4 Release Candidate 1, 1.16.4, 20w45a, 20w48a, 20w51a, 21w03a, 21w05b, 21w06a, 21w19a, 1.17 Release Candidate 2, 1.17, 1.17.1 Pre-release 1, 1.17.1 Pre-release 3, 1.17.1 Release Candidate 1, 1.17.1 Release Candidate 2, 1.17.1, 21w40a, 21w41a, 21w42a
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Fix Version/s: 20w22a
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Labels:None
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Confirmation Status:Confirmed
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Category:Lighting
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Mojang Priority:Important
Description
The bug
When 64 or more light emitting blocks get placed in one chunk at the same time, the light level in the neighboring chunks is not updated correctly.
To reproduce
- Create a new flatland world
- /time set midnight
- Run
/fill ~ ~ ~ ~63 ~ ~63 sea_lantern
while on the ground
- Enable chunk border overlay (F3+G)
→
The light will not have updated properly in some places - Replace the sea lanterns with air again
/fill ~ ~ ~ ~63 ~ ~63 sea_lantern
→
The light did not update properly again
Video
Original description
i was building a house and then all of a sudden i noticed that one half of the house was bright and lit while the other was mostly dark with light patches.
in the photo you can see the split. in the video i switch between the light block and dark block and they have the same light level even though they visually are different.
i had no lanterns before this and the same thing happened.
i tried updating the blocks around and it worked but then returned when i updated other areas.
you can see in the second video that it will just flicker when i try and update the blocks.
the other 2 screenshots are just other odd things that the lighting caused.
you should also know that i placed most of the roof with the /fill command if that helps
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