Cartographer Villager Freezing (caused by OptiFine)
OptiFine is a mod, and Mojang cannot fix your mods. Please remember to only report bugs that occur in vanilla Minecraft.
https://github.com/sp614x/optifine/issues/6001
When I trade with a cartographer Villager and he levels up to level three, he will freeze and cause the game to also freeze. The only way to fix it is to go into task manager and end Minecraft altogether. Then when I go back into the world it sets me back a bit because I couldn't save.
Environment
Windows 10, Java - up to date,
Linked Issues
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Created Issue:
Cartographer Villager Freezing
When I trade with a cartographer Villager and he levels up to level three, he will freeze and cause the game to also freeze. The only way to fix it is to go into task manager and end Minecraft altogether. Then when I go back into the world it sets me back a bit because I couldn't save.
Environment
Windows 10, Java - up to date,
Cartographer Villager Freezing (OptiFine issue)
Mod NoticeOptiFine is a mod, and Mojang cannot fix your mods. Please remember to only report bugs that occur in vanilla Minecraft.
https://github.com/sp614x/optifine/issues/6001When I trade with a cartographer Villager and he levels up to level three, he will freeze and cause the game to also freeze. The only way to fix it is to go into task manager and end Minecraft altogether. Then when I go back into the world it sets me back a bit because I couldn't save.
Cartographer Villager Freezing (OptiFineissue)Cartographer Villager Freezing (caused by OptiFine)
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See MC-228721 and other such issues. This appears to be an issue with OptiFine.
OptiFine mod problem. See MC-228721.
Don't think seed is relevant here. Unlike vanilla, OptiFine appears to be lagging out alot when trying to generate Ocean/Woodland explorer maps for Cartographer trading levels 2-3.
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Duplicate of MC-228721, which was later resolved as invalid due to this issue being caused by Optifine.
Duplicates MC-228721
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This ticket is actually a duplicate of MC-228721 which was later resolved as invalid due to this problem being caused by OptiFine.
This issue can only be reproduced with the use of OptiFine, therefore, making this a duplicate of MC-228721.
This is a duplicate of MC-228721, since this issue can only occur with the use of Optifine.
Duplicate of MC-228721, which was later resolved as invalid due to this issue being caused by Optifine.
If you're using OptiFine, then this is a problem caused by that mod. See MC-228721.
Likely so, as in that video, the glass panes are shown to be connected together, which is a feature of OptiFine. See MC-228721.
Duplicates MC-228721
Naomi Cantrall and Mr Guy, are you both using OptiFine when you experienced this issue?
If so, then this is a problem caused by that mod; see MC-228721.
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Yup, this is a duplicate of MC-228721 which was later resolved as invalid due to this issue being caused by optifine. Disable this modification in order to resolve this problem.
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Thank you for your report!
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Quinton Minnaar, James Gardiner, and Matthew Zampella, if any of you are using OptiFine, see MC-228721.
This issue has not resurfaced in vanilla 1.17 and 1.17.1 at all.
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Did you happen to be using optifine when experiencing this issue? (MC-228721)
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Duplicate of MC-228721 which was later resolved as invalid due to being an issue with optifine. Disable this modification in order to resolve this problem.
Duplicate of MC-228721 which was later resolved as invalid due to being an issue with optifine. Disable this modification in order to resolve this problem.
OptiFine mod problem. See MC-228721.
From looking at their FAQ, Badlion appears to bundle that mod into their clients.
Duplicate of MC-228721, which was later resolved as invalid due to this issue being caused by optifine.
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We're tracking this issue in MC-228721, so this ticket is being resolved and linked as a duplicate.
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If you're using OptiFine, then this is a problem caused by that mod. See MC-228721.
Duplicates MC-228721. Known optifine issue.
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Duplicate of MC-228721 which was later resolved as invalid due to being an issue with optifine.
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Jimmy Chandra, this issue was actually fixed in 20w45a. What you're experiencing here is a case of MC-228721. This is caused by the use of optifine, so simply disable this modification in order to resolve the problem.
Duplicate of MC-228721 which was later resolved as invalid due to being an issue with optifine.
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Duplicate of MC-228721 which was later resolved as invalid due to being a known issue with optifine. Disable this modification in order to fix the problem. ![]()
Duplicate of MC-228721 which was later resolved as invalid due to being an issue with optifine.
Duplicate of MC-228721 which was later resolved as invalid due to being an issue with optifine.
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Do you happen to be using some mods like OptiFine (MC-228721)?
Are you using Optifine, MC-228721?
If you're using an outdated version of OptiFine then this is a duplicate of MC-228721, resolved as "Invalid".
Thank you for your report!
We're tracking this issue in MC-228721, so this ticket is being resolved and linked as a duplicate.
That ticket has already been resolved as invalid. Please take a look at the parent ticket (MC-228721) and see if an explanation is provided there in the description of the ticket or in the comments for why this issue is invalid.
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Would MC-228721 describe you're issue? If so, please disable optifine.

Thank you for your report!
However, this issue is Invalid.
Your game, launcher or server is modified.
If you can reproduce the issue in a vanilla environment, please recreate the issue.
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OptiFine mod problem. Caused by reaching levels 2-3 of Cartographer trading that has Ocean/Woodland Explorer maps. The freeze does not happen in vanilla, even when continually spawning and leveling Cartographers up to generate those map trades; just only minor server lag.
Cartographers freezing world. · Issue #6001 · sp614x/optifine · GitHub
I'm pretty sure if you wait for about half an hour the game will save so if you have made a lot of progress you don't want to lose you might want to wait