This is a duplicate of #1119, however, I would like to provide more details. I am using 1.4.157 on 1.20.4 with Sodium installed, and the issue appears to be related to speed optimizations with chiseled blocks. Blocks will clone, and remain in place, however, as soon as the chunk that they are in is a certain distance from the player, the cloned block will disappear. Is there a configuration option one could set to prevent this?