I have installed opensnitch through garuda assistant. I ran
systemctl enable opensntichd
systemctl start opensnitchd
opennitchd is active and working. opensnithc-ui is needed at login in order to function properly.
However I cannot find a way to start opensnitch-ui upon login only to the status and notifications bar, not minimized.
I have added opensnitch-ui to SystemSettings -> Startup and Shutdown -> Autostart. I have disabled launch feedback. It starts at login a window already open.
EDIT: also the icon on the latte dock is a "W" not the nice icon in the start menu.