[MC-10] Mobs temporarily glitch out of fenced areas / into blocks Created: 24/Oct/12  Updated: 18/Aug/24  Resolved: 11/Nov/15

Status: Resolved
Project: Minecraft: Java Edition
Component/s: None
Affects Version/s: Minecraft 1.4.1, Minecraft 1.4.4, Minecraft 1.4.5, Minecraft 1.4.7, Snapshot 13w10a, Snapshot 13w10b, Minecraft 1.5, Snapshot 13w11a, Minecraft 1.5.1, Minecraft 1.5.2, Snapshot 13w23b, Snapshot 13w24a, Snapshot 13w24b, Minecraft 1.6.1, Minecraft 1.6.2, Minecraft 13w38c, Minecraft 13w42b, Minecraft 1.7.4, Minecraft 14w02c, Minecraft 14w03a, Minecraft 14w03b, Minecraft 14w05b, Minecraft 14w06b, Minecraft 14w07a, Minecraft 1.7.9, Minecraft 14w21b, Minecraft 14w33a, Minecraft 1.8, Minecraft 1.8.1-pre3, Minecraft 1.8.1
Fix Version/s: Snapshot 12w50a, Minecraft 15w45a

Type: Bug
Reporter: Ryan Barrett Assignee: Unassigned
Resolution: Fixed Votes: 155
Labels: None
Environment:

Windows 7, Windows Vista, Windows 8, all Java 7 and 8 versions


Attachments: PNG File 2012-11-17_15.28.50.png     PNG File 2012-11-17_15.28.52.png     PNG File 2012-11-17_15.28.53.png     PNG File 2012-11-17_15.28.55.png     PNG File 2012-11-17_15.28.56.png     PNG File 2012-11-17_15.28.58.png     PNG File 2012-11-17_15.29.00.png     PNG File 2012-11-17_15.29.02.png     PNG File 2012-11-17_15.29.04.png     JPEG File javaw 2013-03-15 16-04-42-57.jpg     JPEG File screenshot-1.jpg     JPEG File zombie snapped back behind fence right after this was taken.jpg    
Issue Links:
Duplicate
is duplicated by MC-6707 Mobs walk through fence hitbox Resolved
is duplicated by MC-7462 Animals Glitch though Cobblestone wall Resolved
is duplicated by MC-8390 Mob going through fence Resolved
is duplicated by MC-9039 mobs can glitch through walls Resolved
is duplicated by MC-10116 animal hit box Resolved
is duplicated by MC-11398 Cobblestone Wall Bug With Zombies Resolved
is duplicated by MC-13248 Animals walking or falling through bl... Resolved
is duplicated by MC-21424 Mobs glitching through fences and oth... Resolved
is duplicated by MC-40403 Ghost mobs appearing when 2 spawners/... Resolved
is duplicated by MC-48416 Mobs displacing in trap Resolved
is duplicated by MC-48444 Mobs phase out of holding areas, then... Resolved
is duplicated by MC-48504 Mobs glitching through blocks Resolved
is duplicated by MC-48655 Animals Resolved
is duplicated by MC-51723 zombie mobs lag floating through wall... Resolved
is duplicated by MC-55539 Animals Glitching through enclosed ar... Resolved
is duplicated by MC-55850 Chickens disobey the laws of physics Resolved
is duplicated by MC-64375 Mobs escape pens Resolved
is duplicated by MC-67495 Mobs walk/pass through fences Resolved
is duplicated by MC-67738 When I put animals in pens (fences) t... Resolved
is duplicated by MC-69509 Get out out of the fence keeps chick Resolved
is duplicated by MC-70012 Cows and sheep moving through fences ... Resolved
is duplicated by MC-70299 Sometimes animals escape fences. Resolved
is duplicated by MC-74678 Animals Escaping from fenced enclosures Resolved
is duplicated by MC-74875 mobs will sometimes glitch through wa... Resolved
is duplicated by MC-81998 Animals glitch though the corner of f... Resolved
is duplicated by MC-84966 Mobs "trespassing" fences and blocks. Resolved
is duplicated by MC-98660 MC-10 Not Fixed Resolved
is duplicated by MC-18 Livestock jumping through 1-high fences Resolved
is duplicated by MC-210 Animals Are glitching through doors! Resolved
is duplicated by MC-959 Baby Sheep sneak through fences Resolved
is duplicated by MC-976 Animals teleporting out of a fenced area Resolved
is duplicated by MC-1029 Animals going into blocks Resolved
is duplicated by MC-1197 Cows push themselves out of cobblesto... Resolved
is duplicated by MC-1470 zombies are getting through walls Resolved
is duplicated by MC-2173 Animal glitching through cobblestone ... Resolved
is duplicated by MC-2291 animals walking through cobblestone wall Resolved
is duplicated by MC-2554 Mobs Pass hrough Cobblestone Wall Resolved
is duplicated by MC-2977 the chickens can go through iron fences Resolved
is duplicated by MC-3873 Passive mob glitch Resolved
Relates
relates to MC-73302 Block collision box issues (mobs glit... Resolved
relates to MC-2025 Mobs going out of fenced areas/suffoc... Resolved
CHK:
Confirmation Status: Confirmed

 Description   

this seems to happen when you have a lot of them in the same fenced of area. this applies to both fences and stone walls

To reproduce:
1. Create an enclosed area
2. Fill it with a lot of mobs, up until the point they keep pushing each other
optional. hold an item that makes mobs follow you and it will be more visible
3. mobs should float outside fence/block, then teleport back in when you get close.



 Comments   
Comment by bob [ 01/Apr/16 ]

I can confirm that my animals are glitching out of the or fenced area, I'm guessing on chunk reload.

Comment by Boyucus Builder [ 31/Mar/16 ]

Yeah, this glitch has been fixed. Now, instead of teleporting back, they just get pushed through completely. Also, it still happens with doors.

Comment by [Mod] redstonehelper [ 06/Mar/16 ]

Video, please.

Comment by sjx [ 06/Mar/16 ]

Still in 1.9

Comment by [Mod] redstonehelper [ 05/Mar/16 ]

@dragorn421: You're looking for MC-2025.

Comment by Dragorn421 [ 04/Mar/16 ]

Definitely confirmed for 1.9. I got similar issues to previous ones multiple times.

Comment by Dragorn421 [ 02/Mar/16 ]

Confirmed in 1.9 release, I found a sheep stuck in a cobblestone wall.
It was one of the red sheeps that was stuck in the wall i'm looking at in this screenshot http://puu.sh/ns0NT/975ba2cd06.png (i'm facing negative x y and z). It happened on a 1.9 vanilla server which "java -version" is:
java version "1.7.0_95"
OpenJDK Runtime Environment (IcedTea 2.6.4) (7u95-2.6.4-1~deb7u1)
OpenJDK 64-Bit Server VM (build 24.95-b01, mixed mode)

I don't know if this happens because of chunk unloading and loading or just if the world stays loaded quite some time.

Comment by MC_Master06 [ 02/Mar/16 ]

LOL Not fixed in 1.9

Comment by Dragorn421 [ 29/Feb/16 ]

I updated my server's version to 1.9 from 1.8.9. Immediately after I log on two zombies are attacking me: they came from the hundred zombies that were still in my xp farm collection thing when I stopped the server to update it, so they escaped their cell somehow. I still have a save of the 1.8.9 world if you need it (500mo though), but this seems quite random and not easy to reproduce.
Here is what their 'cell' looks like: http://puu.sh/nq6wD/325b690631.png
They stand on a slab and there is a 1.5 blocks gap (no baby zombies can reach this point).
Sadly I don't feel like this is fixed, or it's a different issue. I didn't notice anything weird in logs (3 entities, not zombies, seemed to have duplicated UUIDs).

Comment by JON [ 29/Feb/16 ]

Occurs frequently on Xbox 360 regarding keeping large amounts of zombies enclosed in a brick enclosure in a village.

Comment by [Mod] redstonehelper [ 11/Nov/15 ]

Probably fixed somewhere between 1.8.1 and 15w45a.

Comment by Swekob [ 11/Nov/15 ]

Fixed for me. Probably due to MC-2025 being fixed. (15w45a)

Comment by bob [ 24/Oct/15 ]

Does this still happpen in the 1.9 snapshots?

Comment by Mitch Belcher [ 17/Feb/15 ]

Confirmed for 1.8.1 using Windows 8.1 OS with the latest version of Java. This is a persisting issue.

Comment by Sen Choi [ 17/Feb/15 ]

confirmed for 1.8.1

Comment by Andrew Thomas [ 05/Sep/14 ]

Confirmed for 1.8

Comment by Jeuv [ 09/Jul/14 ]

Also in 1.7.10

Comment by Brad Corbin [ 17/Apr/14 ]

This glitch is back in a big way in release 1.7.8 and 1.7.9. It is annoying for animals, but deadly and game-breaking when it happens to hostile mobs!!

I have a Skyblock world with several animal pens and a mob farm. Every time I log in using 1.7.8 or 1.7.9, I have animals out of their fences and hostile mobs running all over the place, when they were safely contained upon logout.

Please fix! Especially for hostile mobs!

Comment by Martijn de Groot [ 22/Feb/14 ]

They also glitch trough transparent block (don't know about solid blocks) for me.
Example: I have a chicken farm where Ihave about 40 chicken locked up in a 1x1x2 area in my world and when I opened the world in one of the latest snapshots they were all spread around the farm.

Comment by Galaxy_2Alex [ 14/Feb/14 ]

Bug is worse in 14w07a.

Comment by Nixinova [ 26/Nov/13 ]

congrats on the name

Comment by _zombiehunter [ 14/Oct/13 ]

This bug should definitely be marked as "related to MC-2025" ...

Comment by Daniel King [ 18/Jul/13 ]

Just so everyone know, this bug is mostly or entirely fixed as an unintentional side effect of my MC-2025 bugfix.
Any questions, comments or concerns about the fix should be posted in the comments section of the link:

MC-2025 Bugfix+ 1.6.2 v23

Comment by _zombiehunter [ 16/Jun/13 ]

Just had exactly this issue in 13w24b. Would someone be so kind and update the "Affects Versions" tag?
Thx.

Comment by Alex H [ 09/May/13 ]

https://mojang.atlassian.net/browse/MC-2025

Comment by Ryan Barrett [ 20/Mar/13 ]

no, i dont know what the id is.

Comment by Brandon Enright [ 20/Mar/13 ]

Ryan, yes, I see this bug is specifically about the mobs appearing to come out of the fence only to zip back in later. Mobs escaping permanently is a different issue. Any idea what the bug ID for that one is?

Comment by Ryan Barrett [ 20/Mar/13 ]

brandon the second part of what you said is true, however that is a different bug then what i reported. whether it is a client side problem or not doesn't change the fact that it is a bug.

Comment by Brandon Enright [ 20/Mar/13 ]

Glitching out and teleporting backe is not the issue. That's a purely client-side problem.

The issue is that mobs can actually escape fences permanently. I've never seen it happen while all of fenced area chunks are loaded and nearby. I think the issue of mobs escaping only happens when chunks containing portions of the fence are unloaded and then reloaded. Most likely animals pushed up against the fence when the chunk is unloaded will either load on the other side of the fence when the chunk is reloaded or, perhaps breaks in the fence due to unloaded chunks allow animals to walk out.

Comment by Jadon Mayhew [ 18/Mar/13 ]

Yep, this is very annoying. Happened to me with glass panes, they glitched so far out of the fenced area through my window and chilled in my house until they 'teleport' back.

Comment by Dranitsin Roman [ 15/Mar/13 ]

13w11a, still happens...

Comment by Tails [ 14/Mar/13 ]

Reopened.

Comment by WHOOPS [ 13/Mar/13 ]

I think this is a crowding glitch because you normally cant spawn 2 mobs on 1 block and so the mobs look like there going throught the fence and then get drawedback to the barn (i thinks its a game logic clash)

Comment by Ryan Barrett [ 05/Mar/13 ]

i have cloned this so it shows that it is unresolved MC-11086

Comment by Dranitsin Roman [ 05/Mar/13 ]

It is not resolved, still happens in 13w10a =(
My chickens still stucks in fence and teleports over it...

Comment by A Full Name [ 13/Jan/13 ]

It think it says "resolved" because they fixed it in a development snapshot version. But that really doesn't count if you ask me.

Comment by Matthew Sladen [ 10/Jan/13 ]

Why does this say resolved when it is not?

Comment by Tom Mate [ 21/Nov/12 ]

I can't confirm this with cows. But chickens and pigs escape all the time from my fenced areas. Makes me really sad

Comment by MisterSanderson [ 17/Nov/12 ]

Not only cows, chicks too.

Comment by ES [ 11/Nov/12 ]

Yes, this bug still exists in Minecraft 1.4.4 pre-release. Please fix it, it's ruining animal breeding...

Comment by Ryan Barrett [ 11/Nov/12 ]

im not shure if it is or not, i havent had a chance to play the new prerelease

Comment by TnT (Trinitro Toluene) [ 10/Nov/12 ]

Is this still a concern on Minecraft 1.4.4 Pre-Release? If so, please update the version affected.

Comment by ES [ 28/Oct/12 ]

New stuff : this bug also concerns cobblestone walls.

Comment by ES [ 27/Oct/12 ]

This is also true for sheep, and perhaps for pigs too. I had noticed this bugs initially with fence gates just after the first official release of Minecraft and reported it on getsatisfaction, but I never knew if the report was ever reported to the Mojang team.

Comment by [Mod] Ezekiel (ezfe) [ 24/Oct/12 ]

This behavior is because the client tries to guess the action of the mob. For some reason it guesses incorrectly.

Comment by Mustek [ 24/Oct/12 ]

I can confirm this.

To reproduce:
1. Create fenced off area
2. Fill it with a lot of cows, up until the point they keep pushing eachother to make stand
3. Cows should float outside fence, then rubberband back in.

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