[MCPE-20109] Gravity blocks - Falling Entities (eg Sand) Break and Drop as Items Unexpectedly Created: 20/Feb/17  Updated: 21/Sep/21  Resolved: 21/Sep/21

Status: Resolved
Project: Minecraft (Bedrock codebase)
Component/s: None
Affects Version/s: 1.16.210.54 Beta, 1.16.30.53 RTX Beta, 1.16.100.58 Beta, 1.16.100.57 Beta, 1.15.0.8 RTX Beta, 1.16.0.60 Beta, 1.15.0.51 Beta, 1.14.20 Hotfix, 1.13.0.18 Beta, 1.12.0.2 Beta, 1.11.0.10 Beta, 1.4.4.0, 1.0.3, 1.0.4.0, 1.0.4.11, 1.0.5.0, 1.0.7.0, 1.1.0.9, 1.1.0.55, 1.1.1.1, 1.1.2.50, 1.1.3.1, 1.1.3.52, 1.1.4.51, 1.2.0.2, 1.1.5.0, 1.2.0.9, 1.2.0.22, 1.2.0.25, 1.2.3.6, 1.2.5.12, 1.2.9.1, 1.2.10.1, 1.2.10.2, 1.2.13.5, 1.2.14.3, 1.2.13.54, 1.2.13.60, 1.2.16.3, 1.5.0.1, 1.4.0.5, 1.5.0.4, 1.4.3.0, 1.4.2.0, 1.6.0.5, 1.6.0, 1.7.0.3 Beta, 1.7.0.9 Beta, 1.6.1, 1.7.1, 1.7.0, 1.9.0.2 Beta, 1.9.0.3 Beta, 1.8.0, 1.8.1, 1.11.0.8 Beta, 1.11.0.9 Beta, 1.10.1 (Windows 10 only), 1.10.0, 1.11.0, 1.12.0.6 Beta, 1.11.4, 1.13.0.2 Beta, 1.12.1, 1.12.0, 1.14.30 Hotfix, 1.14.60 Hotfix, 1.16.0, 1.16.50 Hotfix (iOS), 1.16.40 Hotfix, 1.16.61 (PS4), 1.16.100, 1.16.201 Hotfix
Fix Version/s: 1.17.20.22 Beta, 1.15.0.51 Beta, 1.17.30

Type: Bug
Reporter: CSpider
Resolution: Fixed Votes: 37
Labels: None

Attachments: JPEG File MegaSpud 281.JPG     PNG File Minecraft 4_8_2018 5_10_45 PM.png     File ScaffoldingOnTopSlab.mp4     JPEG File fallingSand.jpg    
Issue Links:
Duplicate
is duplicated by MCPE-29374 la arena se rompe al caer sobre un bl... Resolved
is duplicated by MCPE-53594 Falling blocks break on upper facing ... Resolved
is duplicated by MCPE-64362 Sand breaks when falling on glass Resolved
is duplicated by MCPE-95926 Sand breaking on upside down stairs Resolved
is duplicated by MCPE-119434 Sand gets destroyed on fence instead ... Resolved
Relates
relates to MCPE-18900 Sand, gravel, and concrete powder wil... Resolved
relates to MCPE-40407 Can't place scaffolding on certain fu... Resolved
relates to MCPE-95785 Sand disappears when torch is placed ... Resolved
relates to MCPE-134644 Falling blocks can break when landing... Resolved
Confirmation Status: Confirmed
Platform: Multiple
CHK:
ADO: 286739

 Description   

Update by Mega_Spud:
Summary:
Falling blocks such as sand will break even when landing on blocks that have a full height hitbox, such as hoppers, upturned stairs, or top-half slabs.

Steps to Reproduce:

  1. Place sand a few blocks above an upturned stair block

Observed Results:
The sand will break and drop as an item as it hits the stair block.

Expected Results:
I expected the sand to fall and land as a block, not drop as an item.

Screenshots/Videos attached: Yes

Notes:
List of blocks that cause the falling entity to break, that do not in Java:

  • Hoppers
  • Stair blocks (any orientation)
  • Top-half slabs
  • Cauldron
  • Composter
  • Shulker Box
  • Iron Bars
  • Glass Pane
  • Trapdoors (iron and wooden)
  • Normal Glass
  • Stained Glass
  • Leaves
  • Ice (not packed ice)

=Fixed in 1.16

(Also happens on the following, but for a different reason: These blocks have collision box heights that are > 1 block, which would cause the gravity block to become a stuck falling block if they didn't break. Thanks to yusufulus for pointing this out.)

  • Fences
  • Cobblestone (and other) walls

Additional info by Auldrick:
"Gravity block" as used here means any of the following blocks:

  • Anvil
  • Concrete Powder
  • Dragon Egg
  • Gravel
  • Red Sand
  • Sand

Although Scaffolding and Top Snow also fall under the influence of gravity, they behave very differently from the above and are reported in other tickets.


Original Description:
Gravity blocks are broken when they are falling on non-full blocks (wooden fences, slabs, stairs, cobblestone walls (mossy and regular) daylight sensors, end portal frame, cake, enchanting table, grasspath, hoppers, cauldrons, and hoppers). Galaxy tab 4



 Comments   
Comment by CSpider [ 19/Jul/21 ]

Yes, but it was fixed in the newest Beta. Tested it myself.

Comment by [MCPE Mod] Auldrick [ 19/Jul/21 ]

Re-tested in 1.17 using sand as the falling entity. Results were the same as for 1.16.

Comment by [MCPE Mod] Auldrick [ 27/Nov/20 ]

The reported fix version of 1.15.0.51 Beta appears to be incorrect, as the changelog identifies the issue that was fixed as the one mentioned above in a comment by Vratislav Filler, which was redirected to MCPE-81106. Unfortunately, I am no longer able to remove that fix version. Please disregard it.

I have re-tested all the gravity blocks against all the blocks they fall on and verified that the chart in the description still accurately describes the current state of this issue.

Comment by CSpider [ 29/Sep/20 ]

Updated: Sand doesn't break on ice

Comment by Skaijie [ 29/Sep/20 ]

Affects 1.16.40
Also why is there a stray recursion link to this page in the repro steps?

Comment by [Mod] OcelotOnesie [ 24/Jun/20 ]

vrataf, we're tracking that issue at MCPE-81106.

Comment by Vratislav Filler [ 24/Jun/20 ]

Sterted to happening after 1.16 update on two-layer piston gravity door when pistons are retracted. One layer of sand breaks into items after falling (not 100% sure if upper one, but seems so, because items remains on the top of remaining sand layer). 

Comment by Amphy2k [ 31/Mar/20 ]

iPad Pro 12.9” Gen 1 on iPadOS 13.4 with Minecraft 1.14.30.

I have tested all the blocks listed and some new blocks not listed and found some changes. Sand no longer breaks falling onto leaves as described on the list in the post. All other blocks there do still cause the falling block to break. There is also one new block missing from that list, that being the composter. It too breaks falling blocks when landed on which is not intended.

Comment by Phillip A. Cox [ 31/Mar/20 ]

in the beta they have it where the sand, gravel, etc. dont break when they land on a glass block or scaffolding. they still break on top slabs, stairs, stained color glass.

Comment by Jeffrey [ 29/Jun/18 ]

@Gabriel Matte

That's not the issue. The problem is that all gravity blocks (sand,concrete,etc.) break when falling on almost all transparent blocks even on the top half of a slab. It is not about the transparent blocks but about gravity blocks breaking on them.

Comment by Gabriel Matte [ 09/Apr/18 ]

I think it's all transparent blocks. There's some differences from Java to Bedrock and you just need to learn how to deal with them

Transparent blocks have some advantages like they are spawn proof and are teleport proof for enderman... Well they where I didn't check this update yet.

Comment by Connor Steppie [ 15/Feb/18 ]

This no longer seems to happen with leaves, but other blocks still exhibit this.

Comment by KopperXP [ 23/Aug/17 ]

This is part of Minecraft Java, but it is very useful in some situations. Let the block stay in infinite drop even in Minecraft PC! Please.

Comment by [Mojang] Mega_Spud (Jay Wells) [ 23/Aug/17 ]

Added a comparison image showing which blocks sand will land on with or without breaking, Bedrock vs Java:

You can see in the Bedrock version, they all break sand.

Comment by BlazingBeam [ 23/Aug/17 ]

I'm pretty sure it's not a bug, it was designed this way, the wiki clearly states that falling blocks will turn to dropped items as soon as they fall into non-solid blocks/transparent blocks. For example cake, it does not cover a whole box. That's why it is known as a non-solid block/entity or a transparent block/entity.

Comment by rboxman [ 22/Feb/17 ]

Looks like this is related to MCPE-18900 but this bug is more general as more than just pistons are causing bad behavior.

Comment by PHO [ 20/Feb/17 ]

Specialistol: No. Non-solid blocks are blocks that have no collision box, like torches, redstone dust, vines, signs, etc. It's not WAI.

Comment by Specialistol [ 20/Feb/17 ]

Wiki says it will drop as an item when it falls onto a non-solid block. As I understand it, all of the above qualify as non-solid, so this seems like the intended behavior.

Comment by [MCPE Helper] Aspergerian [ 20/Feb/17 ]

Just tested it;

Aside from fences, it seems that stairs, slabs, grass paths, chests, hoppers, cauldrons, enchantment table, daylight-sensors, end portal frames, cake, and cobblestone/mossy cobblestone walls are affected as well.

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