Does the firewall part use digital signature to recognize apps?

I’m wondering, does firewall part recognize digital signatures used in programs to allow them or does that only work in Defense+ part? For example i don’t want to get ANY popups for avast! Antivirus so i’ve added their digital signature to trusted list. But i still got the warning for setup.avast. WOuldn’t it be smart if that would work for both, firewall and Defense+ ?