1.1.- I recently noticed that all the IC2 recipes were gone from JEI but they still working.

1.2.- So i decided to see what was happening, i looked inside debug.log and found this inside it:
https://pastebin.com/Xmw8mr7j

2.- so i tried to remove Thaumic Augmentation and the IC2 recipes appeared again.

so that's it, there's an issue with Thaumic Augmentation and the IC2 JEI's Plugin

Versions:
JEI: jei_1.12.2-4.15.0.297
IC2: industrialcraft-2-2.8.221-ex112
Thaumic Augmentation: ThaumicAugmentation-1.12.2-2.1.0

(Old version of Thaumic Augmentation that worked fine: ThaumicAugmentation-1.12.2-2.0.13)