Technical Specs (please complete the following information):

• 2.1.1c
• LAN
• 8GB
  Describe the bug
  I am playing with two more friends. When they enter the world, they see blocks so bad. Like instead of a tree they see trapdoors and water, and so.

To Reproduce
Steps to reproduce the behavior:

1. Start a world
2. open it to LAN
3. Get someone to connect
4. Blocks are replaced in their games, not mine.

Expected behavior
Blocks should be the same to all players.

Additional Information (screen shots, etc.)

Hey, there are issues with LAN play.
https://github.com/mahjerion/Craft-to-Exile-Harmony/wiki/Server-Setup
I suggest setting up a dedicated server