It makes me wonder how serious this is as a bug. If part of the programming understands leap years, but other parts don't understand the ramifications, it is en

It makes me wonder how serious this is as a bug. If part of the programming understands leap years, but other parts don't understand the ramifications, it is entirely possible for things to go wonky when dealing with dates such as "The last Saturday of February 2020," or how it'll handle things either on, or scheduled on that day or some time thereafter. How many days elapse between Friday and Sunday in that week? Depending on what it uses to count, you could get pretty wild answers. Lots of ways this could go south.