Notification settings save only what the page offers

When you switch a notification on or off under Settings → Notifications, the save now checks what it was sent. It must name a notification the page lists, with a plain on or off for in-app and email. Anything else is refused and nothing is stored, so your settings only ever hold choices the page can show you.

Nothing changes on the page itself. Your switches show the same settings as before, and a setting you cannot turn off still snaps back with a note saying it was not changed.