This is quite a ridiculous bug and shows how little Apple actually cares about the Screen Time feature. Not fixed after several years.

I, like many others in this thread, feel this feature is quintessential in even giving third-party screen time apps a point. If they can be disabled by a simple button press, how should they aid in restricting access to desired apps/websites? It just doesn‘t make any sense. I really really hope this feature could be implemented, maybe even during one of the intermediate iOS 18 updates… Please apple!