Forge version: 1.11.2-13.20.1.2429
Twilight Forest version: 2.4.0.129
(No Crash)

The castle rune bricks are displaying like this for some reason (This is without Optifine):

When using Optifine they display as solid colour blocks:

Edit: Using CTM does fix the issue both with and without Optifine.

Optifine has some compatability issues with Twilight Forest, if I recall. Try using CTM to enhance the castle brick runes

Partial duplicate of #133 and also don't use Optifine

Is it possible to have an alternate model/check if optifine is loaded? It's fine if fulbright doesn't work but a solid color looks a bit ugly :P

@williewillus, added CUTOUT render layer