Tyndel
Newcomer
This is technically not a bug, but it's definitely unintended behavior. There are some visual elements of the cutscene at the Summit, which you get after achieving perfection, that only appear if certain conditions are met (looking into code here). One of these is a check if it is still year 2 or 1. It is barely possible to get 100% perfection on the last day of year 2, because that's when the last run of Queen of the Sauce is aired. But, the boulder that blocks the way to the summit is removed overnight, which means viewing the cutscene is not possible in year 2. To fix this either the recipe needs to be made available earlier, even if by one day, or the check could be extended by one day so that viewing the scene on Spring 1, Year 3 still counts.