[MCPE-14204] Redstone power level can incorrectly decay Created: 20/Apr/16  Updated: 19/Mar/17  Resolved: 02/Dec/16

Status: Resolved
Project: Minecraft (Bedrock codebase)
Component/s: None
Affects Version/s: 0.14.1, 0.14.2, 0.14.3, 0.15.4, 0.15.7, 0.15.90.2, 0.15.90.7, 0.15.10, 0.16.0, 0.16.1, 0.17.0.1
Fix Version/s: 1.0.0.0

Type: Bug
Reporter: PHO
Resolution: Fixed Votes: 3
Labels: redstone, redstone-comparator, redstone-dust, redstone-repeater, signal-decay, signal-strength, strong-power

Attachments: PNG File incorrect-power-decay.png    
Issue Links:
Relates
relates to MCPE-14083 Redstone components with <15 signal s... Resolved
Confirmation Status: Confirmed
Platform: Tablet - iOS - iPad 3
CHK:

 Description   

Redstone dust, when powered by an adjacent strongly-powered solid opaque block, can be powered 1 level weaker than the power level of the said opaque block if there is another dust on top of it and they are connected.

It's true that, in the left hand of the screenshot, redstone wire being powered is "travelling" 1 block. But since both of two dust are adjacent to the same strongly-powered block, shouldn't they both be powered to the same level?

Description of the screenshot:
Top right: A repeater is powering a block to level 15. The block powers an adjacent redstone dust which goes to the side of comparator in subtraction mode. The comparator subtracts 15 from 15 so its output is 0.

Top left: The comparator is subtracting 14 from 15 for some reason.

Bottom right: A comparator in subtraction mode emits power level 1, so it powers a solid block in front of it to level 1 and thus redstone dust next to it is powered to 1.

Bottom left: The solid block is powered to level 1 but the power level of redstone dust next to it is decreased to 0 for some reason.



 Comments   
Comment by Zeb [ 02/Dec/16 ]

Although this was partially fixed in 1.0.0.0 (1.0 beta build 3), there are still some instances of this bug occurring with comparators. See MCPE-14083.

Comment by Zeb [ 10/Oct/16 ]

Affects 0.15.90.8 (0.16.0 beta build 5).

Comment by Zeb [ 06/Oct/16 ]

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 4.4.4.)

Comment by Zeb [ 01/Sep/16 ]

Confirmed for 0.15.7. (Tested on Windows 10.)

Comment by Zeb [ 08/Aug/16 ]

Confirmed for 0.15.4. (Tested on Windows 10.)

Comment by AMAN4700 [ 08/Aug/16 ]

Please respond and add the current version if you can reproduce this issue.

Comment by Zeb [ 21/Jun/16 ]

I believe this bug may actually be the cause for MCPE-14083.

Comment by PHO [ 27/May/16 ]

Thank you jocopa3 for your confirmation. Changed the confirmation status to "Confirmed".

Comment by Matt S [ 26/May/16 ]

Can confirm.

For comparison, here is the same setup in the PC version: http://i.imgur.com/xcq00JJ.png
And here is the setup again in Minecraft Win10: http://i.imgur.com/XnDmflw.png

Generated at Sat Jan 11 15:02:50 UTC 2025 using Jira 9.12.2#9120002-sha1:301bf498dd45d800842af0b84230f1bb58606c13.