iOS 15: notifications say "You have received a new message" Previews are gone.

I actually see this thread appears on the forum for MacOS, back to el Capitan. People were advising to switch browsers. lol.

This is a messaging service, somewhere in the bowels of iOS - or maybe even deeper in some shared core codebase, across OS types.

But it just started for me now, with iOS 15.0.2. I have all Notifications settings on, and configured like when this did not happen.