Hi! There doesn't seems to be anything wrong in code here . The point here aren't given depending on your inheritance or the difficulty level. You probably chose your character to like breakfasts however, if you choose icecream instead this point will go to the chest for example.
In your case, the breast inheritance will make you start with slightly bigger breasts at start, not a growth bonus.
Tell me if the issue persists after knowing this ;) And thanks for taking time to report!