Auto update maybe not working?

Hi, I use Rocky workstation.

To enable auto updates, I have done:

sudo dnf install dnf-automatic

and

sudo systemctl enable --now dnf-automatic.timer

and for the last couple of years this has worked fine in that, when I used Gnome shell to shutdown, the Gnome Power Off dialog window will have a check mark asking if I would like to install updates and restart, if there are any updates.

However in the last few weeks I have not seen any updates.

So I did:

sudo dnf up

and there is a long list of updates ready to install - I ran this update and it went thru 840 updates to be exact.

So it seems auto-update is no longer working. What am I missing? Any help is much appreciated.