Primarily tested on modpack NotTooComplicated2:

There's a weird bug that occurs when chemlib and industrial foregoing are in the same pack.
I've tested it by removing chemlib and it seems to fix the issue.

The issue is upon first server or client load in a world the recipes for IF work. But then when you save and go back to main menu and relog all the recipes dont show in JEI anymore at all. Again, upon removing chemlib it works.

chemlib-1.16.5-2.jar

industrial-foregoing-1.16.5-3.2.14.6-14.jar

Forge-36.2.21