MC-157644Extended block updates do not propagate outwards
The bug
Redstone components can be powered from a redstone wire that is no longer powered.
To reproduce
- Place a block of TNT on the ground
- Place redstone dust on the ground directly in front of the TNT block
- Place a redstone torch next to the redstone dust, in such a way that it is diagonal to the TNT block
- Break the torch
→
The TNT ignites for some reason
Video
Linked Issues
Low
![[Mod] Jiingy](../../../data/avatars/users/91802.png){kind=small}
![[Mod] violine1101](../../../data/avatars/users/92858.png){kind=small}
Created Issue:
TNT Bug Powering
I don't know if this is done on purpose, but TNT can be powered from a redstone charge that I don't think exists anymore.
STEPS TO RECREATE:
- Place down some Green Wool. (that's just the one I'm using, i don't know if it matters what block)
- Place a block of TNT directly next to the green wool. It must be touching, and not on top or below. This also needs to be on the ground/flat surface.
- Place 2 redstone dust on the ground, in such a way that it is next to both the wool and TNT.
- Break the redstone dust next to the green wool.
- Replace the redstone dust with a redstone torch.
- Break the torch. The TNT ignites for some reason.
Environment
1.14.4 (i got it to work, FINALLY)
Dell Insparation
Win10
I don't know if this is done on purpose, but TNT can be powered from a redstone charge that I don't think exists anymore.
STEPS TO RECREATE:
NOTE: I have a video of all of this attached.
- Place down some Green Wool. (that's just the one I'm using, i don't know if it matters what block)
- Place a block of TNT directly next to the green wool. It must be touching, and not on top or below. This also needs to be on the ground/flat surface.
- Place 2 redstone dust on the ground, in such a way that it is next to both the wool and TNT.
- Break the redstone dust next to the green wool.
- Replace the redstone dust with a redstone torch.
- Break the torch. The TNT ignites for some reason.
I don't know if this is done on purpose, butTNT can be powered from a redstonecharge thatI don't think exists anymore.
STEPS TO RECREATE:
NOTE: I have a video of all of this attached.
- Place down some Green Wool. (that's just the one I'm using, i don't know if it matters what block)
- Place a block of TNT directly next to the green wool. It must be touching, and not on top or below. This also needs to be on the ground/flat surface.
- Place 2 redstone dust on the ground, in such a way that it is next to both the wool and TNT.
- Break the redstone dust next to the green wool.
- Replace the redstone dust with a redstone torch.
- Break the torch. The TNT ignites for some reason.
The bug
TNT can be powered from a redstone wire that is no longer powered.
To reproduce
- Place a block of TNT on the ground
- Place redstone dust on the ground directly in front of the TNT block
- Place a redstone torch next to the redstone dust, in such a way that it is diagonal to the TNT block
- Break the torch
→Video
1.14.4 (i got it to work, FINALLY)
Dell Insparation
Win10
TNT Bug PoweringTNT is ignited despite redstone wire not being activated
![[Mod] Michael Wobst](../../../data/avatars/users/37868.png){kind=small}
![[Helper] Jack McKalling](../../../data/avatars/users/92859.png){kind=small}
is duplicated by
![[Bot] Arisa](../../../data/avatars/users/43007.png){kind=small}
relates to
TNT is ignited despite redstone wire not beingactivatedSpurious redstone activation when redstone wire changes shape at the same time as it is deactivated
The bug
TNTcan be powered from a redstone wire that is no longer powered.To reproduce
- Place a block of TNT on the ground
- Place redstone dust on the ground directly in front of the TNT block
- Place a redstone torch next to the redstone dust, in such a way that it is diagonal to the TNT block
- Break the torch
→Video
The bug
Redstone components can be powered from a redstone wire that is no longer powered.
To reproduce
- Place a block of TNT on the ground
- Place redstone dust on the ground directly in front of the TNT block
- Place a redstone torch next to the redstone dust, in such a way that it is diagonal to the TNT block
- Break the torch
→Video
![[Mod] ampolive](../../../data/avatars/users/18949.svg){kind=small}
Spurious redstone activation when redstone wire changes shape at the same time as it is deactivatedExtended block updates do not propagate outwards
![[Mod] Jarl-Penguin](../../../data/avatars/users/92849.png){kind=small}
Thank you for your report!
We're tracking this issue in MC-157644, so this ticket is being resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
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Can confirm in 20w51a.
This is a little something we redstone engineers call quasi-connectivity.
Yes, I am aware due to now being quite the technical player. Is there a way to close this (as while its technically a bug despite mojang stating they are not removing it)?
Can confirm in 21w06a.
Can confirm in 1.16.5 and 21w08b.
Can confirm in 21w15a.
Can confirm in 1.17.1.
This is caused by the fact that the wire is not fully unpowered before the wire's connections are updated.
This might be MC-9714?
Yup, that's the same bug.
This bug is absolutely not MC-9714
MC-196649is a duplicate of this bug tho.This is actually just normal Redstone behavior. The bug is actually caused by the Redstone torch updating the TNT before updating the Redstone dust. When the TNT gets updated it notices that the Redstone dust is still powered and lights itself.
With a Redstone block however, the Redstone block does not update that far and the TNT is never updated.
A fix can be found here: https://github.com/fxmorin/carpet-fixes/blob/1.18/src/main/java/carpetfixes/mixins/blockUpdates/RedstoneTorchBlock_updateOrderOnBreakMixin.java
Although the proper fix would be to write the torch updates to be done in the correct order, without all the duplicate updates.
I suggest renaming this bug report to: `Extended Block Updates do not propagate outwards`
Since this only effect blocks that give extended block updates. It also affects all Redstone components, not just TNT
Is this issue still reproducible in 24w33a? Speaking from a visual standpoint, the redstone wire is visually lit and directed towards the TNT:
2024-08-20_23-27-50.mp4
The currently result would appear to be expected.