Hello. Recently, I've been buying a bit too many trial maps from cartographers, and noticed this bug. Every time a cartographer levels up to appretice or journeyman, the game freezes for a few seconds
Steps for reproduction:
Summon a villager and place a cartography table (preferrably on a normal world and not superflat so the ocean map can be offered)
Trade with it until it levels up
All entities but the player freeze, similar to the effects of /tick freeze
for a bit (may not be as noticable on higher-end PCs)
Attatchments (I forgot to turn on F3 on one of them, but they're both from the same installation):
https://drive.google.com/file/d/1ZCmoej0gdaD9PyPMwf7Pxl2h92lYOefZ/view?usp=drive_link
https://drive.google.com/file/d/11DXOG2xh8DD_W9hlfCBxDmcG6OqbhjV1/view?usp=drive_link
World file:
https://drive.google.com/file/d/1saFejieXfkWP6NB7-fq6ZcDACcDEqL5G/view?usp=sharing
Linked issues
duplicates 1
Attachments
Comments 7

Would MC-228721 describe you're issue? If so, please disable optifine.
Hello, my apologies for not replying earlier, as I was a bit busy.
I was unable to directly attatch the videos as they're too large, but here are the links:
https://drive.google.com/file/d/1ZCmoej0gdaD9PyPMwf7Pxl2h92lYOefZ/view?usp=drive_link
https://drive.google.com/file/d/11DXOG2xh8DD_W9hlfCBxDmcG6OqbhjV1/view?usp=drive_link
We do not have enough information to find the cause of this issue.
Please attach the affected (zipped) world file. If the file size is too large, please upload it somewhere else and then link to it here.
This issue is being temporarily resolved as Awaiting Response. Once the requested information has been delivered, the report will be reopened automatically.
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Attatched world file
I can reproduce the behavior in the provided world, though this appears to be MC-250276. Would you say that issue describes the behavior here? The game is locating a structure (through the villager) and freezing when it is far away. In your case, while the distance isn't entirely unreasonable, the structures are far away:
[media]
I'd say it does. My guess as to why it took so long to reproduce is that the issue probably only affects a handful of seeds
Hello! I just tested this out on a Normal Instance of Minecraft 1.21. I didn't experience any lag or frame drops, though may also just be me, hopefully someone else can help out here if this is a reoccurring issue, it may also be your Graphic & Visual Settings on Minecraft. Did you happen to have any Shaders, Mods or Use a Certain Client?