additionalInfoFields on non-eventTickets

We noticed that in iOS 27 the additionalInfoFields are displayed in all pass types (coupon, storeCard etc.) despite Apple's documentation stating that they're only supported for poster event tickets ("Only poster event ticket passes support the Additional Info section.").

Can someone from Apple confirm if additional info fields will be supported on all pass types going forward or if this is a bug and we should not rely on that feature. We'd love to use them but don't want to risk that they're disappearing with one of the next iOS updates.

Forums don't allow to post in Wallet which is why I chose Apple Pay.