[MCPE-12025] Items will not jump to the next highest solid platform when a transparent block is placed atop them Created: 10/Dec/15  Updated: 21/Feb/19  Resolved: 08/Feb/19

Status: Resolved
Project: Minecraft (Bedrock codebase)
Component/s: None
Affects Version/s: 0.13.0, 0.14.3, 0.15.0, 0.15.4, 1.1.0.9, 1.0.8.1, 1.1.4.51, 1.2.0.22, 1.2.8.0, 1.2.9.1, 1.2.10.2, 1.4.0.5, 1.5.0.4, 1.4.2.0
Fix Version/s: 1.9.0.0 Beta, 1.9.0

Type: Bug
Reporter: Koshii Takumi
Resolution: Fixed Votes: 23
Labels: item-entity, transparent-block

Attachments: JPEG File MegaSpud 100.JPG     JPEG File MegaSpud 101.JPG     JPEG File MegaSpud 105.JPG     PNG File image.png    
Issue Links:
Duplicate
is duplicated by MCPE-13455 stair glitch Resolved
is duplicated by MCPE-14911 Block replaced under chest cannot be ... Resolved
is duplicated by MCPE-16372 Item not flying up glass bug Resolved
is duplicated by MCPE-26237 3x3 glass item elevator is not working Resolved
is duplicated by MCPE-26830 Glass item elevator not working Resolved
is duplicated by MCPE-30136 items dont go a block up if no space ... Resolved
Relates
relates to MCPE-10959 Dropped items floating in placed blocks Resolved
relates to MCPE-32546 [Fixed in 1.7.0] Items cannot be drop... Resolved
relates to MCPE-25100 Dropped items Cannot Pass Under Top-H... Resolved
Confirmation Status: Confirmed
Platform: Windows
CHK:
ADO: 68832

 Description   

Update for 1.2.0.22 by Mega_Spud:
Although there have been some changes to the way dropped items behave in the 1.2 beta, they can still get stuck inside transparent blocks. Video showing the issue: https://youtu.be/prjuNIXbgZ0


Edit by Mega_Spud:
Verification builds:
1.1.0.9 Retail
1.0.8.1 Retail

Summary:
Dropped items can become stuck inside transparent blocks, instead of being pushed out to the next available space. Under certain circumstances these cannot be picked up by the player until the transparent blocks are broken (eg. Stairs).

(See screenshots)
Steps to Reproduce Example 1: (See example video: https://youtu.be/sfjmxf_pp6s)

  1. Create a 3x2x3 cube of glass blocks, with a hollow tube in the middle
  2. Drop items into the tube in the middle
  3. Fill the tube with glass

Observed Results:
The items move up and then back down into the glass block at the bottom.

Expected Results:
The dropped items should move up to the top of the glass.


Steps to Reproduce - Example 2: (See example video: https://youtu.be/m9-k5ggk2rg)

  1. Make a 2x2 hole in the ground
  2. Drop items into the hole
  3. Place slabs or stairs in the hole

Observed Results:
The items simply stay stuck inside the slabs or stairs

Expected Results:
The dropped items should move up or out to the next available gap.

Screenshots/Videos attached: Yes

Notes:
Original Description:
When I put transparent blocks on dropped items, the items disappeared.



 Comments   
Comment by [MCPE Mod] Auldrick [ 21/Feb/19 ]

As of 1.9.0, the Example 1 scenario appears to be completely fixed for 3 x 3 layers. (If any of a layer's blocks are missing, items will sometimes excape to the side there, though not necessarily a side where a block is missing. But I have no reason to think anybody even cares about that exception.)

The Example 2 scenario appears to be fixed when glass blocks or bottom slabs are placed, but not right side up stairs. In the case of top slabs, the items remain in the void space under the slabs, which you could argue is intentional. In the case of upside down stairs, there could be from 1 to 4 void spaces for which you could make the same argument; however, the items don't move into any of them and don't move upward either.

Comment by [MCPE Mod] Auldrick [ 01/Jul/18 ]

There has been a change in 1.4.2.0 (or possibly earlier).

In Example 1 above, dropped items will now rise through the center tube of glass as you fill it from above. However, items placed inside the tube by a dispenser or dropper will only move up one block before being ejected out the side, and items into which you push a glass block will be ejected out the side without moving up.

There has been no change to Example 2.

Comment by [Mojang] Mega_Spud (Jay Wells) [ 04/Jan/18 ]

Relates to MC-88843

Comment by [MCPE Mod] Auldrick [ 03/Jan/18 ]

After a good deal of experimentation with dispensing items into opaque and transparent blocks, I believe that different logic is involved between item entities that discover they're in a partial block versus item entities that are dispensed with momentum into a full-sized block. Items that are trapped in a partial block continue to search for an air block to move into, but if one becomes available they quietly slide into it. Items that are trapped in a full-sized block, on the other hand, appear to retain their momentum and shoot out of it when an air block becomes available. They also play the "footstep on dirt" sound at regular intervals while they are trapped, whereas items in partial blocks do not.

MCPE-26830 was tagged as a duplicate of this issue. However, it addresses the issue that 3x3 glass item elevators do not work. Since it specifically talks about dispensing items into glass blocks, and this ticket does not, I'm concerned that the behavior difference mentioned above will not be considered when looking for the cause, and that a fix for this issue will not fix item elevators, which per Helen Angel are supposed to work in Bedrock. If the other ticket is not going to be tracked separately, please be sure to test the fix for this issue with 3x3 glass item elevators.

Comment by Mark St. Louis [ 23/Nov/17 ]

Glad to hear that they do intend to fix it. Could really use it now but will have to make do.

Comment by [MCPE Mod] Auldrick [ 04/Oct/17 ]

For those who wonder whether this is a bug or "works as intended", Helen Angel says that they intended glass elevators to work and guesses that it's a bug.

Comment by Ryan Hayes [ 03/Oct/17 ]

Cam confirm item elevators do not work on Xbox on realms. This happened on the original Xbox version and was fixed. Hopefully this is fixed soon as it is an almost essential build if you plan to build farms.

Comment by [Mojang] Mega_Spud (Jay Wells) [ 24/Aug/17 ]

Still an issue as of 1.2.0.22.

Although there have been some changes to the way dropped items behave in the 1.2 beta, they ca still get stuck inside transparent blocks. Video showing the issue: https://youtu.be/prjuNIXbgZ0

Comment by Joseph Atkin [ 23/Aug/17 ]

The item elevator was a bug in the PC version. However, they could not remove it without causing an uproar. Mojang does not want a glass item elevator in PE. I agree it would be useful, because dropper elevators create a lot of lag, but I doubt they will give the function.

In 1.2 they changed it so the item in transparent blocks get transported to the next available area so they do not get stuck. In other words, this bug is fixed as of 1.2.

Comment by KopperXP [ 23/Aug/17 ]

This error needs to be fixed! It is very useful in Minecraft PC and Pocket Edition would be a great achievement!

Comment by CSpider [ 31/Jul/17 ]

Still doesn't work in 1.2 Beta build 1

Comment by [Mojang] Mega_Spud (Jay Wells) [ 05/May/17 ]

Updated description.

Comment by [Mojang] Mega_Spud (Jay Wells) [ 05/May/17 ]

Reopening as this is still an issue in 1.1.0.9.

Comment by jason [ 06/Aug/16 ]

Items still do not travel through non solid blocks ie glass as of the .15 update can not build glass item elevators the bug report says it has been fix I am running win beta

Comment by AMAN4700 [ 02/Jun/16 ]

Does this bug still appear in 0.14.3? Please respond.

Generated at Sat Jan 11 14:54:25 UTC 2025 using Jira 9.12.2#9120002-sha1:301bf498dd45d800842af0b84230f1bb58606c13.