not if it is a mistake but I put a layer of snow next to a block with a button and it is placed underneath on the side of the block with the button at the same time

This is caused by the optifine "better snow" function

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.

• Any non-standard client/server/launcher build needs to be taken up with the appropriate team, not Mojang.

• Any plugin issues need to be addressed to the creator of the plugin or resource pack.

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