[MCPE-11871] Redstone not powering horizontally adjacent blocks Created: 28/Nov/15  Updated: 06/Apr/18  Resolved: 06/Apr/18

Status: Resolved
Project: Minecraft (Bedrock codebase)
Component/s: None
Affects Version/s: 0.13.0, 0.14.0, 0.14.2, 0.14.3, 0.15.0, 0.15.1 Beta 1, 0.15.1, 0.15.2, 0.15.4, 0.15.6, 0.15.7, 0.15.90.2, 0.15.90.7, 0.15.10, 0.15.90.8, 0.16.0, 0.16.1, 0.17.0.1, 0.16.2, 1.0.0.0, 1.0.0.1, 1.0.0, 1.0.2, 1.0.3, 1.0.4.0, 1.0.4.1, 1.0.4.11, 1.0.5.13, 1.0.6.0, 1.0.5.54, 1.1.0.0, 1.0.7.0, 1.1.0.8, 1.1.0.9, 1.1.0.55, 1.1.1.0, 1.1.2.50, 1.1.3.1, 1.1.5.0, 1.2.0.31, 1.2.1.1, 1.2.3.6, 1.2.5.12, 1.2.5.15, 1.2.6.55, 1.2.7.2, 1.2.8.0, 1.2.9.1, 1.2.10.2
Fix Version/s: 1.2.6.2, 1.2.10.1, 1.2.13.54

Type: Bug
Reporter: Kabir Oberai
Resolution: Fixed Votes: 19
Labels: redstone, redstone_wire, strong-power

Attachments: PNG File 2018-04-06.png     PNG File IMG_5910.PNG     PNG File IMG_5911.PNG     PNG File Lever-Off PC.png     PNG File Lever-Off.PNG     PNG File Lever-On PC.png     PNG File Lever-On.PNG     File Minecraft 12_6_2017 12_50_08 PMTrim.mp4     PNG File Minecraft 12_6_2017 4_15_38 PM.png     JPEG File ScreenShot 583.JPG     PNG File another-pattern-of-redstone-glitch.png     JPEG File ineffective-rs-dot.jpg     PNG File redstone-failing-to-power-a-lamp.png    
Issue Links:
Duplicate
is duplicated by MCPE-20941 Comparator bug Resolved
is duplicated by MCPE-25110 Redstone lines do not power the prope... Resolved
is duplicated by MCPE-26004 Redstone torch bug Resolved
is duplicated by MCPE-26968 Only redstone dot powers block Resolved
is duplicated by MCPE-28984 Redstone not powering blocks. Resolved
is duplicated by MCPE-31397 Redstone mechanic broken Resolved
Relates
relates to MCPE-16892 Redstone powers the wrong blocks when... Open
relates to MCPE-16831 Redstone comparators do not test for ... Resolved
relates to MCPE-30658 No output from block Resolved
relates to MCPE-11353 Redstone dot doesn't power blocks on ... Resolved
relates to MCPE-14668 Redstone repeaters facing into a reds... Resolved
relates to MCPE-15850 Observers redirect Redstone Dust (but... Resolved
relates to MCPE-16170 Observers powering redstone dust belo... Resolved
relates to MCPE-21898 Redstone torch is on although it shou... Resolved
Confirmation Status: Confirmed
Platform: Tablet - iOS - iPad Air 2
CHK:
ADO: 35239

 Description   

I was trying to build an XOR gate in MCPE, but I came across an issue in which redstone, when powered by a strongly powered adjacent block would not power horizontally adjacent blocks. One configuration in which this happens is attached below.

I could not reproduce this bug in the PC (Java) edition of Minecraft, and I have also attached pictures of it functioning correctly there.

Update by nighter
This bug has been reported to our internal bug tracker for further testing and a fix. It is scheduled to be fixed in one of the future updates (no specific date can be provided).
Please avoid duplicate comments. Post only NEW information regarding this bug.



 Comments   
Comment by [Mojang] Mega_Spud (Jay Wells) [ 06/Apr/18 ]

That issue might be related to or another case of MCPE-16892

Comment by MaladjustedPlatypus [ 06/Apr/18 ]

That would be a separate bug, redstone powering blocks it should not be powering.

Comment by Tyler [ 06/Apr/18 ]

Not quite. This redstone lamp shouldn't be powered.

Comment by Zeb [ 11/Feb/18 ]

Mistahtokyo, the 1.2.10.2 release seems to have been based off a different development branch than the 1.2.10.1 beta build, so some of the fixes/changes in that beta will likely show up again in 1.2.11. Until then, I'll reopen this issue.

Comment by MaladjustedPlatypus [ 11/Feb/18 ]

Odd... Perhaps the fix was reverted from the beta? That exact test case was fixed in it (the beta).

Comment by [MCPE Mod] Auldrick [ 11/Feb/18 ]

The error demonstrated in the "Lever-Off.png" and "Lever-On.png" attachments still exists. Tested in Windows 10 1.2.10.2.

Comment by MaladjustedPlatypus [ 25/Jan/18 ]

Confirmed to be fully fixed using my previous test cases.

Comment by Thomas [ 09/Dec/17 ]

Ah I see. Thanks for informing me. I'm not the best at redstone. I'm also still used to the Java edition

This makes my previous comment invalid.

Comment by Zeb [ 09/Dec/17 ]

CactusOwnage, that behavior is intentional. The redstone wire powers the block below it and any non-wire blocks adjacent to that block, such as the piston, whereas the repeater only powers the block on its output side and any blocks adjacent to that block, if there is one. Because the repeater is just pointing into air, it powers nothing, and so the piston is not powered.

In Java Edition, a quirky behavior called quasi-connectivity (or QC - caused by mistakes in the redstone & piston code) causes pistons, droppers, and dispensers to be powered in instances where they logically should not, such as in this case with the repeater.

Comment by Thomas [ 09/Dec/17 ]

https://gyazo.com/418e45b94834496e3bd57674bba8fab1

Repeaters don't power pistons that are positioned like this. When replacing the repeaters with redstone, the piston DOES get powered.

Comment by MaladjustedPlatypus [ 06/Dec/17 ]

As the 'Minecraft 12_6_2017 4_15_38 PM.png' image shows, this is fixed for certain orientations, but not all.

Comment by Zeb [ 06/Dec/17 ]

Seems to be at least partially broken again in the final 1.2.6 release.

Comment by [MCPE Mod] Auldrick [ 06/Dec/17 ]

Not fixed in 1.2.6 release. Even the use cases in the original attachments don't work. Video attached. Minecraft 12_6_2017 12_50_08 PMTrim.mp4

Comment by Zeb [ 11/Nov/17 ]

Fixed in 1.2.6.2, as far as I can tell! If anyone finds a case of this bug that is still occurring, please post it here and I'll reopen the ticket.

Comment by Zeb [ 24/Oct/17 ]

Some, but NOT all of the cases of this bug have been fixed as of 1.2.5 build 2.

Comment by [MCPE Mod] Auldrick [ 01/Aug/17 ]

Affect version 1.2.0.2 (Win 10).

Comment by rboxman [ 21/Feb/17 ]

Still present in 1.0.3... I can't believe this bug is still present after all this time

Comment by PHO [ 21/Jan/17 ]


This one also shows a bug in 1.0.2. The left-hand block can not by powered by activating the lever on top of the center block. But it can be powered by the lever on the side.

Comment by [Mojang] Mega_Spud (Jay Wells) [ 19/Jan/17 ]

Some of the example are working correctly in 1.0.0, but there is one remaining instance which does not behave in the same was as Java redstone:

Comment by [Mojang] Adrian Östergård [ 12/Oct/16 ]

This bug has been reported to our internal bug tracker for further testing and a fix. It is scheduled to be fixed in one of the future updates (no specific date can be provided).

Comment by Zeb [ 10/Oct/16 ]

Affects 0.15.90.8 (0.16.0 beta build 5).

Comment by Zeb [ 05/Oct/16 ]

I wonder if this bug has the same root cause as MCPE-11353. Perhaps that bug was never completely fixed, and this is what is left of it?

Also, affects 0.15.10. (Tested on Windows 10.)

Comment by Zeb [ 16/Sep/16 ]

Affects 0.16.0 Beta Build 4 (AKA 0.15.90.7).

Comment by Zeb [ 03/Sep/16 ]

Confirmed for 0.15.90.2. Using an Acer B1-750 tablet. (Intel HD Graphics for BayTrail, Android KitKat 4.4.4)

Comment by Zeb [ 01/Sep/16 ]

Confirmed for 0.15.7. (Tested on Windows 10.)

Comment by David White [ 28/Aug/16 ]

Just found this glitch on my iPhone running mcpe 0.15.6. One interesting note is that pistons are not affected by this glitch, probably due to the change that makes redstone now automatically connect to pistons.

Comment by kaleb418 [ 31/Jul/16 ]

@Kyle Bartush We no longer assign tickets to people in this tracker.

Comment by Kyle Bartush [ 30/Jul/16 ]

Is Mojang aware of this at all? There hasn't been an assignee on this issue at all since this issue was created.

Comment by Kyle Bartush [ 30/Jul/16 ]

Also confirmed in 0.15.4 on Samsung Galaxy S5

Comment by Zeb [ 30/Jul/16 ]

Affects 0.15.4. (Tested on Windows 10.)

Comment by Zeb [ 04/Jul/16 ]

Affects 0.15.1. (Tested on Windows 10.)

Comment by Zeb [ 25/Jun/16 ]

Confirmed on 0.15.0 on Windows 10.

I was able to reproduce every situation in the pictures except the one in another-pattern-of-redstone-glitch.png. Powering from strong power below seems to be fixed, but horizontal strong power is still buggy.

Comment by PHO [ 28/Apr/16 ]

Legonxtcreator, it's been reopened already.

Comment by Kyle Bartush [ 28/Apr/16 ]

This is not a duplicate and has been confirmed by the community, however the confirmation status in unconfirmed.

Comment by PHO [ 17/Mar/16 ]

Moderators, please reopen this. The glitch came back to 0.14.0 alpha, and it's mislabeled as "Duplicate" too.

Comment by PHO [ 21/Feb/16 ]

@kabiroberai only moderators, unfortunately

Comment by Kabir Oberai [ 20/Feb/16 ]

@PHO do I have to reopen it? Or can only a moderator do so

Comment by PHO [ 20/Feb/16 ]

The glitch came back to 0.14.0 alpha. Please reopen this.

Comment by PHO [ 16/Dec/15 ]

Fixed in 0.13.1. Thanks.

Comment by Kabir Oberai [ 05/Dec/15 ]

@PHO I have updated my bug report with regard to your comments.

Comment by Kyle Bartush [ 30/Nov/15 ]

Confirmed while making a NOT NOT (see MCPE-11887)

Comment by PHO [ 30/Nov/15 ]

It turned out that the line needs not to be powered sideways to cause the glitch. The same oddity happens when it's powered by a block below it. See MCPE-11887 and another-pattern-of-redstone-glitch.png.

Comment by PHO [ 28/Nov/15 ]

It's not just about torches. When a line of redstone dust is powered by a strongly-powered adjacent block, it fails to power a horizontally adjacent block while it powers a block below it or another dust placed next to it (See redstone-failing-to-power-a-lamp.png). The glitch does not occur when the dust in question is a dot, not a line (Correction: the same thing will happen when a dot is powered sideways but not from below). So this is very similar to MCPE-11353 but apparently not the same.

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