Describe the bug
When using a modern light with a light switch on a server, the light doesn't turn on at all. The switch also doesn't control the fan. Everything works in single-player mode

To Reproduce
If applicable, the steps to reproduce the behavior:

1. Install the Furniture Mod on server and client
2. Place a Modern Light and link a light switch to it

Please complete the following information:

• Minecraft Version: 1.12.2
• Mod Version: 6.3.0