Hello.
Gnome 42 finds its way to Archlinux stable repositories. If you’re using any pamac-aur version, you won’t be able to get Pamac icon in the notification area.
This is a known bug: https://gitlab.manjaro.org/applications/pamac/-/issues/1252
So, no need to fill any other bugs or to ask for pamac-aur maintainers to fix this issue.