https://media.discordapp.net/attachments/900966037401526332/937472897520369674/ezgif-7-d4721789cb.gif

As you see in gif, players cannot walk on valley mossy blocks

I assume this is a server and client sync issue with blocks, AKA the ghost block. If that is the case, then I honestly don't know how to fix this other than removing the ability to spawn moss carpet above.

could you add this ability?

I assume this is a server and client sync issue with blocks, AKA the ghost block. If that is the case, then I honestly don't know how to fix this other than removing the ability to spawn moss carpet above.