mojira.dev
MC-50556

Mobs walk off open wooden and iron trapdoors or get trapped in them because they think they are closed

The bug

Mobs ignore open trapdoors and act like they are not open. This causes mobs to fall into places they would not usually end up like dying when falling off a > 24-meter opening space, which will kill them, and often traps them in weird places.

Related issues

MC-96264 Mobs unable to jump on the open-trapdoor MC-116178 Cows and other animals the same size's AI cannot figure out how to get out of this MC-147769 Villagers cannot jump over trapdoors (even during raids) MC-148034 Villagers wont jump over trapdoors. MC-148294 Villagers and other mobs in taiga villages get stuck in the "barrels" and cant get out MC-148491 The mobs are getting stuck in trapdoors MC-148732 Mobs can be stuck inside spruce trapdoor structures in taiga villages MC-149212 Pillagers cannot attack when spawning on a 1x1 block gap MC-150848 Villagers get stuck in Taiga village trapdoor things causing them to get killed MC-151470 Trapdoors stops mobs from jumping, but not players MC-151807 Villager try to walk through trap_door with half top to bed MC-152565 Villagers cannot jump over trapdoors in villages MC-152849 Reminder MC-50556 MC-156074 Villager PathFinding MC-156132 Villagers get stuck in the “baths”. MC-157432 Mobs try to patfind through trapdoors MC-160038 the bee has a broken animation if it is in the water MC-160851 Bees Getting stuck on trapdoors MC-166080 Entities like villagers can´t jump onto open trapdoors MC-167631 Mobs Trying to go through trapdoors MC-169780 Mobs get stuck in troughs in spruce villages MC-170983 Mobs can't jump on trapdoors if it is on egde of block in front of mob MC-171992 Villagers stuck in naturally generated empty 'taiga_decoration_1' water trough MC-173686 Villager AI does not work with naturally generated trap doors. MC-179436 Villager Pathfinding/AI struggles with trapdoors MC-179466 Villagers getting stuck MC-179599 Spinning Mobs MC-181105 Villagers all get stuck in these Boxes MC-183019 Piglin MC-183581 zombies walks through trapdoor MC-191610 Villager's AI issues MC-195668 Villagers cannot jump over the trapdoor MC-197839 Villagers, cats(and more?) cannot jump over trapdoors and literally get trapped MC-201215 Trapdoor Bug MC-232669 mobs will see opening trap doors as full blockes MC-258177 Villagers Stuck Trying to Get Through Vertical Stacked Trap Doors MC-258798 You know how mobs get trapped in trapdoors, meaning they can't jump over? it also applies to the warden , which is extremely op. I don't know if it's a bug or its on purpose but yeah. MC-259986 Warden cannot jump over open trapdoors MC-266221 Animals wont jump over trapdoors.

Attachments

Comments

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Samuel Klumpers

Trapdoors are considered a solid block by every mob. So they think they can't fall trough even though the trapdoor is open.

galaxy_2alex

Is this still an issue in the current Minecraft Snapshot 15w46a or later? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.

[Mod]Les3awe

This issue relates to MC-94115

[Mod]Les3awe

Confirmed for 16w04a

Bren Rado

Is this still an issue in 16w05b?

[Mod]Les3awe

Confirmed for 16w06a and 16w05b

[Mod]Les3awe

Confirmed for 1.9-pre1

[Mod]Les3awe

Confirmed for 1.9-pre4 and 1.9-pre3

[Mod]Les3awe

Confirmed for 1.9.1-pre1

Bren Rado

Can Confirm for 1.9.1 pre-release 3

[Mod]Les3awe

Confirmed for 16w14a

[Mod]Les3awe

Confirmed for 1.9.3-pre1

[Mod]Les3awe

Confirmed for 1.9.3-pre2

[Mod]Les3awe

Confirmed for 1.9.3-pre3

[Mod]Les3awe

Confirmed for 16w21a.

[Mod]Les3awe

Confirmed for 16w21b.

[Mod]Les3awe

Confirmed for 1.10-pre1.

[Mod]Les3awe

Confirmed for 1.10-pre2.

[Mod]Les3awe

Confirmed for 1.10.

[Mod]Les3awe

Confirmed for 1.10.1.

Jon1337

Confirmed for 16w39c

James

" Trapdoors are considered a solid block by every mob. So they think they can't fall trough even though the trapdoor is open. "

And in the case of a 1x1 hole with a trapdoor over it they are right! Cows, sheep, and pigs which will fall through a 1x1 hole will not fall through that same hole if it is covered by an open trap door.

JUE13

Confirmed for 17w18b

Forever Master

Confirmed for 1.13 Pre-release 8. This behavior does not happen with the new wooden trapdoors in 1.13. See MC-132358

Kraif

Confirmed for 1.13.1.

SuperHotC4

A lot of farms rely on this bug such as my zombie pigman farm as I need them to walk off the edge using trap doors, I think this should stay as it is due to how many farms use trapdoors to get mobs to walk off the edge towards the kill chamber.

Joe

as @SuperHotC4 mentions above, I also think this is a kind of bug that shall be turned into a feature unless minecraft devs creates a block for this behavior, just check how many farm tutorials over youtube are relying on this bug/feature

Ahmil Jilani

Confirmed in release 1.14.1

W_V

I don't get it. If it still works, then why did they make those ''empty flowerbeds/water troughs/barrels/baths'' made out of spruce trapdoors in 1.14 Taiga villages. It is very annoying, if I see something like this, I always break it, no matter what.

W_V

Confirmed for 20w09a

Erador

Wait so this has been an issue since 2014 (6 Years) and is reported multiple times every year and this is still an issue? Why do worlds still naturally generate with trap doors in villages like this if there is no plan to fix it??????????

W_V

Affects 20w10a, can I request ownership?

W_V

Affects 20w11a and 1.15.2

awesome90

I think this is more of a feature than a bug cause its a trap door and the mob isn't suppose to expect it. 

FACS01

upvote to @awesome90 's comment hahah 

W_V

@awesome90, this is definitely not an intentional feature.

Orbic

In 20w12a

W_V

Confirmed for 20w13b. A bug over 6 years old

W_V

Confirmed for 20w15a

bugsbugsbugs

This bug gets used in many mob farms. If this gets fixed it would break them.

W_V

Confirmed for 20w16a

Orbic

In 20w18a

Orbic

In 20w19a

DanielPlayingMC

Don't break mob farms!

Finnegan O'Donnell

There is no current replacement, so it shouldn't be removed, similar to tnt duping, if they add a tricker block or something, then it's fine to be removed, but for now, it has to stay.

W_V

Well, I think that tricking mobs shouldn't be removed, but mobs getting trapped inside them should definitely be fixed. It's pretty annoying

violine1101

Please do not use this comments section as a discussion forum. If you want to discuss this bug, please do so on our subreddit /r/Mojira or our Discord server.

yenseo Jang

working as intended

muzikbike

can you provide official proof of this being intended?

Uriel Salischiker

When commenting that you need to include a official source

Orbic

In 1.16 Pre 3

W_V

In 1.16rc1

Null

"working as intended"?? How is villagers, cats and probably more being trapped in the villages trapdoor decoration thing intended? Mobs not being able to jump over trap doors definitely isn't intended. It ruined my village by trapping them so I had to destroy the trap door decoration thing.

W_V

For these trapdoors still generating naturally - MC-199420.

Carlos G.

A smart solution for the Village generation problem would be if Mojang addresses MC-130584, because from my experience mobs try to avoid Trapdoors with blocks or fluids in the inside my solution was always fill these decorations with Water so they either avoid these or just float on top of the water, the problem is when MC-130584 takes place, this issue makes problematic to save these Decorations Structures with Data Packs because the water will spread & I believe these decorations were previously introduced with water inside during the snapshots of 1.14, later on the water was taken away, hopefully now Mojang decides to finally fix this problem and bring back the water in these decorations so Villages no longer generate with traps inside.

W_V

Another fix could be that mobs could autojump if there is a 1-block high obstacle in their pathfinding.

Dmitry Konev

Farms have been using this for ages now, fixing it would be a terrible mistake.

W_V

@unknown, for missing water see MC-205894

Sego

Vanilla 1.19.4 never fixed

[media]

So we should babysit every villager in game to make sure they don't die? 

SamanthaSays

This bug gets my pet wolves killed so often when trapdoors are used to decorate bridges and cliffside paths.

Jon1337

If this is intended then why do villages generate with death traps that the villlagers walk into and get stuck in?

Sam Bone

Kraif

(Unassigned)

Confirmed

Mob behaviour

Minecraft 14w08a, Minecraft 1.7.5, Minecraft 14w10b, Minecraft 14w10c, Minecraft 14w11b, ..., 1.16.2 Pre-release 2, 1.16.2 Pre-release 3, 1.16.2 Release Candidate 1, 1.16.2 Release Candidate 2, 1.16.2

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