Growing Power Aura not working on archguns

[Sevenus.]

note - did not find a suitable tag, kind of new to the forums.

I have noticed that Growing Power aura does not work when i fire with archguns(heavy weapons) on normal missions, later found out not even on archwing missions. i know im probably out of a few players who really care about this but im trying to understand why guns, pistols ,even sentinel weapons, and exalted weapons, but not with archguns.

also, all aura mods affect archwings as well , why growing power isnt?

would be really happy to get it fixed/changed as it feels abit unfair.