[MCPE-396] Duplication Glitch when mining and quitting immediately Created: 24/Oct/12  Updated: 07/Sep/15  Resolved: 17/Jul/14

Status: Resolved
Project: Minecraft (Bedrock codebase)
Component/s: None
Affects Version/s: 0.5.0, 0.4.0, 0.6.0, 0.6.1
Fix Version/s: None

Type: Bug
Reporter: Forrest Herr
Resolution: Cannot Reproduce Votes: 2
Labels: duplication, item

Attachments: PNG File step 1.PNG     PNG File step 2.PNG     PNG File step 3.PNG     PNG File step 4.PNG     PNG File step 5.PNG    
Issue Links:
Duplicate
is duplicated by MCPE-1076 Unlimited amount of any placeible blo... Resolved
is duplicated by MCPE-1838 Blocks disappear Resolved
is duplicated by MCPE-1844 Blocks Resolved
is duplicated by MCPE-1985 ore multiplication glitch Resolved
is duplicated by MCPE-2058 duplication glitch Resolved
is duplicated by MCPE-2124 Block and chest duplicating Resolved
is duplicated by MCPE-2334 duplication glitch of any placeable item Resolved
is duplicated by MCPE-4491 A diamond glitch!! Resolved
is duplicated by MCPE-4747 infinity glitch Resolved
is duplicated by MCPE-432 Item Duplication Resolved
is duplicated by MCPE-441 Duplication Glitch Resolved
is duplicated by MCPE-1000 Block Duplication glitch Resolved
Relates
relates to MCPE-747 Items disappeared after being stored ... Resolved
Confirmation Status: Community Consensus
Platform: Tablet - iOS - iPad 3
CHK:

 Description   

Duplication Glitch

You should get one item.

Instead you get two items.

1. Mine item
2. While still holding down from mining, immediately hit pause and then quit to title
3. Go back into world
4. The item will be in your inventory and back on the spot where you chopped it down already.



 Comments   
Comment by Benjamin Pitman [ 22/Feb/15 ]

What I expected to happen was...:

Scenario: Expected: picking up an item, quitting and loading - the item should be in my inventory, there should not be a duplicate on the ground
Given there is an item on the ground
When I pick up the item
And force quit Minecraft pocket
And open the world again
Then the item is in my inventory
And the item is NOT on the ground

What actually happened was...:

*Scenario: Actual: picking up an item, quitting and loading - There item is duplicated - it's in my inventory and on the ground
Given there is an item on the ground
When I pick up the item
And force quit Minecraft pocket
And open the world again
Then the item is in my inventory
And the item is an item on the ground
When I pick up the item
Then I have the item twice in my inventory

Steps to Reproduce

  1. Put one item in your inventory (step 1.png)
  2. Throw it on the ground (step 2.png)
  3. Wait for 10 seconds (presumably the inventory and the map chunks both save at this time)
  4. Pick up the item
  5. Immediately quit (presumably the inventory is saved immediately, but we are quitting before the map chunks have saved, as per comments by luisrobles)
  6. reload the world (step 3.png)
  7. You can see you have the item in the inventory and on the ground (step 4.png)
  8. Picking up the item proves it's duplicated, as it's in the inventory twice (step 5.png)

Doesn't follow the ACID test: http://en.wikipedia.org/wiki/ACID

System info

  • I am using an iPhone 6+
  • I am using MCPE 0.10
  • I am in survival mode
Comment by tommo [ 17/Jul/14 ]

Cleaning up all the old issues - please reply if this affects 0.9.3.

Comment by Vince Hagar [ 03/Dec/13 ]

0.8.0 alpha build 6
HTC Thunderbolt
I noticed this when MCPE locked up and I force closed it. I had been trying to pick up a crafting bench, and didn't think anything of it when I reentered my world after restarting MCPE, I just picked up the crafting bench that was there. I went to place what I thought was my only crafting bench at the time and found I had 2.

I think this may also be the issue that put me on top of a tree I thought I had chopped down, again after a lock up and force close cycle. The tree (and a couple of others I know I chopped down) were present again.

Comment by fuj1n (Arthur Uzulin) [ 14/Mar/13 ]

Marked as affecting 0.6.1 in favor of MCPE-2058.

Comment by Luis Robles [ 13/Feb/13 ]

The problem is that the chunks(map) and the entitly(inventory) data are on separated files, i think the entitly data is saving every seconds, but the chunks data is saving every 5 seconds because the chunks.dat is the bigger file.

Generated at Sat Jan 11 14:09:45 UTC 2025 using Jira 9.12.2#9120002-sha1:301bf498dd45d800842af0b84230f1bb58606c13.