Proper jam bread has 64 saturation, whereas the uncrafted jam bread item [Before the item has been assigned a jam to use the effects of] only has 8.

I don't see that on my environment. Is that a mod conflict?

stale

Came here looking for this issue, can confirm this happens in a base environment of Neoforge 1.21.1, and latest versions of Apple Skin, Farmers Delight and Fruits Delight.

Also when crafting mango salad the saturation is 77, while just pulling it from creative gives the regular saturation.

crafting with jam

pulling from creative

will test

I was not aware that it's on 1.21.1
Issue confirmed and resolved in 1.2.9
Apologies!