Happened sometime in Feb 2021, didn't know this was here nor if anyone said anything.

Was in some AOF modpack with this mod, and thought it was a smart idea to put a already made sandwich to a still making sandwich. It allowed it, till I picked it up, then the game crashed. And, tada, every time I tried to open the world it kept crashing every time. Yah, pretty stupid, but curiosity killed the cat

How to reproduce:
no clue as I didn't try to re-create it, most likely just putting a sandwich in a sandwich

If you are going to report a bug please test it in the newest version. It has been long since patched unless another mod is causing problems.