I don't even understand this bug description. It's an edge case I guess I never ran into, so pretty easy to handle.
That said, it's not like everything is perfect, just 100% better than my drive-by experiences trying to have a gaming PC (dead, again), and an Android phone for testing purposes.
To clarify their issue, you can celebrate someones birthday without knowing the year they are born, you only need to know the reocurring date. You can't enter a birthday in apple contacts without a year, if you attempt it it sets it as the date of tomorrow.
My experience with apple is something's either a 2 minute fix or unfixable which to be fair is a reasonable way to do things though much less appealing to me (though less relevant for many users as stock android/windows continue to give users less and less control).
Are we talking about the Contacts app on macOS? I just added the birthday "9/22" to a contact. On blur, the value changes to "September 22". On save, I see the value "September 22" reflected in the birthday field of the contact.
That said, it's not like everything is perfect, just 100% better than my drive-by experiences trying to have a gaming PC (dead, again), and an Android phone for testing purposes.