I ran into a problem while replacing the block file

[soul-zym]

I tried to replace the playing world block with the same block file from the same seed world, but ran into an issue

First, move away from the block in the game so that it is out of range, replace the corresponding.mca file, and then move closer to the replaced block, you will find that the terrain inside the block is strange, and looks like a split grid

Blocks will only be formed properly if the game is restarted after replacing a block and before approaching the block area

How can I solve this problem? I want to avoid restarting and replacing blocks normally