[MC-253400] 1.19 Named Mobs Disappearing

I loaded my 1.18 world into 1.19 only to find that my farms of various sorts (enderman, iron golem, etc...) were not working as they should be. I came to find out that the named mobs that were key to making the farms work were despawning. I opened a new world to see if this was still the case, sure enough, it was. The mobs would disapear regardless of named status or if items were held by such mobs. The mobs I tested included zombies and endermites, both used in the farms I have.

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Comments 19

anthony cicinelli 2022-06-21T13:45:53Z

Please attach a screenshot of this occurring while the F3 debug screen is enabled.

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mben42 2022-07-07T05:58:11Z

Hi, I can confirm this bug also affects zombified piglins.

TorandoChaser 2022-07-17T03:42:16Z

Can confirm, had two zombies disappear, one held items and the other was named. Nothing nearby that could kill them.

[Mod] markderickson 2022-07-26T04:08:20Z

Hi! Were the mobs you tested this with named with a name tag, or named by changing the name of a spawn egg?

mben42 2022-07-26T19:10:50Z

Hi, with a nametag. Please reopen the bug!

9 more comments

tryashtar 2022-07-26T19:11:54Z

Could you post the 1.18 copy of the world please?

mben42 2022-07-26T20:55:59Z

I don't have such a copy, perhaps the original reporter does? But the bug is easy to reproduce

anthony cicinelli 2022-08-04T15:48:24Z

Please provide what @unknown requested

mben42 2022-08-04T16:34:17Z

Close such a bug without a correction is a shame! It has a huge impact on gameplay.

user-f2760 2022-08-04T17:24:43Z

It's awaiting response... provide the requested info, and it will automatically get reopened.

mben42 2022-08-04T17:48:41Z

I am not the reporter, I don't have his 1.18 world, I just have the same problem on the 1.19 server I play on (and that I don't administrate, then I don't have access to the files).

Alexis Tyson 2022-08-05T16:07:18Z

Sorry for the wait!! I've been busy doing things lol, it should be attached now. What is attached is my survival world that I first noticed the bug on. Around the spawn there are a couple of resource farms that require named mobs. They disappeared over time. The world began in 1.18.2, but was loaded into 1.19 following the recent update.

Arisa Bot 2022-08-05T16:07:25Z

This report is currently missing crucial information. Please take a look at the other comments to find out what we are looking for.
If you added the required information and a moderator sees your comment, they will reopen and update the report. However, if you think your update to this report has been overlooked or you want to make sure that this report is reopened, you can contact the Mojira staff on Discord or Reddit.
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Alexis Tyson 2022-08-05T16:26:30Z

Link to drop box of the world: https://www.dropbox.com/s/soh4zu50bd365jf/1_18%20Surival.zip?dl=0

John 2022-10-04T19:52:36Z

I'm not the reporter, but I just encountered this. A few dozen named piglins that I'd had for over a year disappeared without a trace. I've tried to come up with any ways they could have died, but I can't find any. I even tested what would happen if hoglins spawned in the area and wandered into the space with the piglins, but the piglins are behind closed trap doors and the two don't see each other.

TheNikola2018 2022-10-05T07:10:22Z

Can you send video

user-f2760 2023-03-14T12:03:17Z

Seeing this report again, it looks like MC-54556, named spawn egg mobs despawning, which is by design. A name doesn't prevent despawning, PersistenceRequired does, which name tags set alongside the name.

To anyone who reproduced this with name tags, I'd suggest providing steps to reproduce and/or a video of the issue.

[Mojang] Triage Team 2024-11-14T08:25:36Z

Thank you for your report!
After consideration, the issue is being closed as Won't Fix.

Please note that this is not the same as Working as Intended, as this bug report correctly describes behavior in the game that might not be the intended or desirable behavior, but it will not be fixed right now. Sometimes, this is because the issue reported is minor and/or impossible to change without large architectural changes to the code base.

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mben42 2024-11-14T10:28:16Z

Is that a joke? This bug does have a huge impact on gameplay, that "important" Mojang priority confirms. It is hard to believe that large architectural changes to the code base would be needed just to fix nametags not assigning a tag anymore!