Whenever i level up my cartographer(s), my game freezes, and then when i exit my world it takes about 10 minutes for the game to save.
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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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Duplicate ofΒ MC-228721Β which was later resolved as invalid due to being an issue with optifine. Disable this modification in order to resolve this problem.