iOS Is Testflight Autorenewable Subscription's expirationtime broken?

Question

I am expirencing a "bug?" while testing autorenewable subscriptions in iOS 8 with Testflight.

Apple said, that a autorenewable subscription for 1 month expires after 5 minutes in sandbox. For me the expiration doesn't happen after 5 min, it will renew for 12 hours.

Anyone else did notice something like that? Is it a bug or is there a way to fix this?

Answer 1

So, yes it is broken and it will never ever expire. Got this answer on Apple dev forums.