Mine: require setting a URL to support password managers. You download an app, go to login, tap the password field, and open Bitwarden. Does it find your login? Half the time, nope! The dev didn’t tell Apple one time what their URL is, so everyone now has to search their password manager every time.
It’s still there, although there’s a loophole of course.
4.5.4:
The “explicit opt-in” could easily be language hidden in a massive ToS that nobody reads. So I guess I wish Apple would do away with that entirely and start enforcing it.