This is a problem with Project Ozone 3 (all releases)
My world works perfectly fine, but when I wanted to makes facades for my AE2 system I couldn't find them in JEI.
I've searched everywhere in JEI and can't find the facades. They're not there.
Even when I updated they are nowhere to be found.
Nevermind, I found out what happened, I was just being dumb...