It has to do with the fact that any notification displayed on your device goes via a separate system service which was caching them.

It is amusing to see how often people confuse device notifications with Apple notification service.

Why can't we have notification history just like on Android then. It's very useful when you dismiss a notification you didn't want to, or you look for some old stuff.

UPDATING IOS WILL ENABLE AUTOMATIC UPDATES TO IOS 26.

(Bad!) This is a new shady tactic they're using trying to get iOS 18 users to install iOS 26.