Just my opinion: I think wheat should decay like the other uncooked foods. Might be logical to give it a bit more ‘shelf life’ than the other uncooked foods though.
While were on the subject, I wonder if cooked foods should decay as well, albeit at a significantly slower rate.
I’m pretty sure all food will rot eventually, it just happens at different rates. I have not witnessed this effect myself yet, except in the most recent unstable build (the flies were a clue—are they new in Alpha 12?).
What I don’t understand is what happens to food that has rotted.