Hi,

(Note that it impacts unstable despite being reported against bookworm)

There is an error in the documentation of notify-send(1), i quote:

It's not starting with 1, but 0. Run this in a terminal and click "See log":

notify-send -i /usr/share/icons/vendor/64x64/emblems/emblem-vendor.png \
            -A "See log" -t 2000 \
            "Unattended-upgrade" "Some upgrades were applied\!"

To check it out.

Cheers,

Frank.