IE version: ImmersiveEngineering-0.12-84
Modpack: Direwolf20 1.12 version 2.1.0
World: Dedicated server

Issue: Whenever someone applies a shader on a minecart, the other people online don't see any difference to the minecart. The minecart changes shaders for the person who applied them, but not for anyone else.

Reproducing: Put down minecart, apply shader to it, have friends say that it didn't change.

Other info; Also happened with version 0.12-82