Welcome news. I’ve been searching for months trying to find others with my issue. The case will not charge, SOMETIMES, and the phone charges first to 99% but the case doesn’t. In other situations, the case is listed as the product code in the Notification Center instead of “Smart Battery Case”. And as it’s in my pocket it will vibrate like you’re plugging it in over and over. Then weeks will go by where nothing appears wrong, then it happens again.
i can’t reliably reproduce the issue, hopefully they swap it out anyway. This is an XS Smart Battery case.