Underground Light Sources Create Sky Light When Any Nearby Block is Placed or Destroyed
The observed result is actually that the game begins to treat the location of the block light source (e.g. the spot the torch is in) as if it is a sky light source, even after you break the block light source. During daytime the location becomes brighter than a torch, and if you break the block light source at night you will see a low light level where there should be no light at all.
While building a mob spawner farm, I used tinted glass or sold blocks to darken the area. However, when I flicker the Redstone lamp and updated some blocks, the light source renders "overworld" lighting, making the cave too bright.
How to Reproduce
- Locate a cave or another source of darkness.
- Place any block that supports light. For example, place several torches.
- Break or place several blocks near torches.
- Destroy all torches.
Observed Results
When updating blocks, light sources nearby will render the area as if the user is standing on the surface. This means that it will increase the light levels much brighter than a torch or a glowstone.
Expected Results
Updating the blocks near a light source should not render the area as "overworld" surface light.
Linked Issues
is duplicated by6
MCPE-154462Phantom/Too Bright LightsDuplicateMCPE-154791Skylight underground after updating/breaking light producing blocksDuplicateMCPE-154968Light issues, since 1.18.30DuplicateMCPE-155138Torches still emit light after I break them.DuplicateMCPE-155437Torches lights’ are broken. DuplicateMCPE-156491Lighting bugDuplicate![[Mod] GoldenHelmet](../../../data/avatars/users/18951.svg){kind=small}
Created Issue:
Light Sources Uses "Overworld" Lighting When Any Nearby Block is Placed or Destroyed
While building a mob spawner farm, I used tinted glass or sold blocks to darken the area. However, when I flicker the Redstone lamp and updated some blocks, the light source renders "overworld" lighting, making the cave too bright.
How to Reproduce
- Locate a cave or another source of darkness.
- Place any block that supports light. For example, place several torches.
- Break or place several blocks near torches.
- Destroy all torches.
Observed Results
When updating blocks, light sources nearby will render the area as if the user is standing on the surface. This means that it will increase the light levels much brighter than a torch or a glowstone.
Expected Results
Updating the blocks near a light source should not render the area as "overworld" surface light.
Attachments1
vlc-record-2022-05-13-02h05m53s-vlc-record-2022-05-13-02h05m14s-Minecraft-.mp4-.mp4
- Unresolved
- Open
- Unconfirmed
- Windows
- Windows 10
- 1.18.32
Light Sources Uses"Overworld" Lighting When Any Nearby Block is Placed or Destroyed
duplicates
is duplicated by
duplicates
Light Sources Use"Overworld"LightingWhen Any Nearby Block is Placed or DestroyedLight Sources Use Sky Light When Any Nearby Block is Placed or Destroyed
Underground Light Sources Use Sky Light When Any Nearby Block is Placed or Destroyed
is duplicated by
![[Bot] Arisa](../../../data/avatars/users/43007.png){kind=small}
is duplicated by
is duplicated by
Underground Light SourcesUse Sky Light When Any Nearby Block is Placed or DestroyedUnderground Light Sources Create Sky Light When Any Nearby Block is Placed or Destroyed
Note from [Mod] GoldenHelmetThe observed result is actually that the game begins to treat the location of the block light source (e.g. the spot the torch is in) as if it is a sky light source, even after you break the block light source. During daytime the location becomes brighter than a torch, and if you break the block light source at night you will see a lower light level instead of no light..
While building a mob spawner farm, I used tinted glass or sold blocks to darken the area. However, when I flicker the Redstone lamp and updated some blocks, the light source renders "overworld" lighting, making the cave too bright.
How to Reproduce
- Locate a cave or another source of darkness.
- Place any block that supports light. For example, place several torches.
- Break or place several blocks near torches.
- Destroy all torches.
Observed Results
When updating blocks, light sources nearby will render the area as if the user is standing on the surface. This means that it will increase the light levels much brighter than a torch or a glowstone.
Expected Results
Updating the blocks near a light source should not render the area as "overworld" surface light.
Note from [Mod] GoldenHelmetThe observed result is actually that the game begins to treat the location of the block light source (e.g. the spot the torch is in) as if it is a sky light source, even after you break the block light source. During daytime the location becomes brighter than a torch, and if you break the block light source at night you will see a low
erlight levelinstead ofno light..While building a mob spawner farm, I used tinted glass or sold blocks to darken the area. However, when I flicker the Redstone lamp and updated some blocks, the light source renders "overworld" lighting, making the cave too bright.
How to Reproduce
- Locate a cave or another source of darkness.
- Place any block that supports light. For example, place several torches.
- Break or place several blocks near torches.
- Destroy all torches.
Observed Results
When updating blocks, light sources nearby will render the area as if the user is standing on the surface. This means that it will increase the light levels much brighter than a torch or a glowstone.
Expected Results
Updating the blocks near a light source should not render the area as "overworld" surface light.
Note from [Mod] GoldenHelmetThe observed result is actually that the game begins to treat the location of the block light source (e.g. the spot the torch is in) as if it is a sky light source, even after you break the block light source. During daytime the location becomes brighter than a torch, and if you break the block light source at night you will see a low light level where there should be no light at all.
While building a mob spawner farm, I used tinted glass or sold blocks to darken the area. However, when I flicker the Redstone lamp and updated some blocks, the light source renders "overworld" lighting, making the cave too bright.
How to Reproduce
- Locate a cave or another source of darkness.
- Place any block that supports light. For example, place several torches.
- Break or place several blocks near torches.
- Destroy all torches.
Observed Results
When updating blocks, light sources nearby will render the area as if the user is standing on the surface. This means that it will increase the light levels much brighter than a torch or a glowstone.
Expected Results
Updating the blocks near a light source should not render the area as "overworld" surface light.
![[MCQA] v-magwar](../../../data/avatars/users/18935.svg){kind=small}
![[Mojang] Mega_Spud (Jay Wells)](../../../data/avatars/users/92696.png){kind=small}
![[Mod] OcelotOnesie](../../../data/avatars/users/43220.png){kind=small}
is duplicated by
Thanks for the quick reply. I found we're already tracking this at MCPE-155808 so I am resolving this report as a duplicate. Please watch the other report for updates.
Still an issue. What happens is that when you break a torch underground the game updates the light based on the current skylight level as if it were on the surface. See MCPE-155808 for steps to reproduce.
Thank you for your report!
We're resolving and linking this ticket forward as a duplicate of MCPE-155808, as that ticket contains more detailed information and/or has already been triaged by Mojang.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki
– I am a bot. This action was performed automatically! The ticket was resolved by one of our moderators, and I left this message to give more information to you.
Thank you for your report!
We're tracking this issue in MCPE-155808, so this ticket is being resolved and linked as a duplicate.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki
TransAran: what you are seeing in 1.18.30 is tracked at MCPE-155808.
This is fixed as of the current release. Was probably fixed earlier, perhaps 1.19.10 with MCPE-155808.
Can you upload a video of this happening? Does this occur every time you break a light source underground?
This does not happen every time you break a light source underground. It seems to depend on location but I am not sure of the exact mechanic for that. It does not require relogging, reloading the chunk, or 2-player scenarios. I was able to reproduce after trying a few different spots in an enclosed box in a brand new world.
Most of the time you have to place a solid block in the position where the block light source was broken in order to remove the sky light: The ghost light.mp4
However, this video seems to show the light levels in the blocks where the torch actually reached returning to 0 after destroying the torch while sky light remains one block farther away: Light at the limits.mp4
I wonder if this is related to the fix for
MCPE-151266? It seems that the block light source tries to update its light level whenever a solid block is placed nearby, but when doing so it incorrectly treats its location as being at the surface of the world.Here in android happens the same thing, im on android 6.0
Looks like this is more frequent when I’m lighting up dark caves and mining at the same time. Thanks for confirming this bug!
If you have a copy of the world available, you might like to upload a copy of it for investigation.
If the world is larger than 10MB you can upload the world to OneDrive or a similar file sharing site, and then share the link.
It does not depend on the world. Light at the limits.mp4
shows me reproducing the bug in a brand new world with a random seed.
Same results in another new world with random seed: Light test.mcworld
To reproduce:
Demo: More light repros.mp4
In most runs of these steps some sky light will remain somewhere in the room after step (4). You can verify that it is skylight by switching between night and day with commands.
This bug is fixed in the latest preview / beta version, and the fix will be included in a future update when that is ready for full release (no specific date can be given). We will leave this ticket open as a point of reference until the fix has been fully released.