Re: [FIXED] [CoL] Hatchable eggs disappearing/spoiling
I tried to test this bug further. The problem, in my opinion, lies in the fact that there must be a hen always available to brood it. If, for some reason, the egg is left uncovered for too long, it rots. On the other hand, if you try to get at least one hen back into the chicken coop she will lay on top of the egg to keep it warm. If not, simply move the egg to the position where the hen is.
The bug is about animal autonomy (the hens do not realize there is an egg to brood), not so much that you cannot get the egg to hatch. If you pay attention to the hens and get them back into the coop on time, the egg will hatch. @TheSimsDirect