After a certain amount of time, villagers can stop pathfinding/restocking/doing any AI requests at all. Sometimes this lasts for very extensive periods of time, and sometimes it can be permanent. Here are two villagers I've watched for nearly an hour.
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relates to MC-147740
@Aerotactics Thank you, I have a feeling I might know what the issue is. Would you mind sending a world download of the non-working iron farm?
@MukiTanuki it's a multiplayer server, and I'm not the owner. Sorry.
It appears to have something to do with chunk loading. About 5% of the time when I log in, it works normally. I don't think it just randomly starts up while I'm online.
@Aerotactics Is it constantly being loaded in the spawn chunks? I'd really need screenshots of your exact farm that you're using.
One thing of note that I will say is that villagers now require working and sleeping within 24000 ticks in order to respawn golems. This means that every time you unload the chunks, log off, etc. it can take up to 24000 ticks or 20 minutes for the villagers to start producing iron golems again, assuming their in loaded chunks and can work at their workstations.
@Aerotactics I've discovered several flaws in the iron farm design in question. I've made some revisions to the redstone and posted images and instructions here if you're interested:
https://imgur.com/a/4c0KPII
Can confirm in 1.19.3 and 23w04a, also related to MC-258295
May somehow relate to MC-149012