So my question is this, is this intended or a bug?
You should definitely file a bug about this.
I suspect that this is actually Just A Bug™ but, even if it is By Design™, it’s worth filing a bug explaining how that design is affecting your app in the real world.
Please post your bug number, just for the record.
Share and Enjoy
Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware
let myEmail = "eskimo" + "1" + "@apple.com"