So I have a Hygiea Noblesse, pictured above, which is supposed to have a 14 round magazine. It says so when I inspect the weapon. However, it currently only holds 13 rounds in the mag. It doesn't have any perks like feather mag or braced frame or smallbore that would reduce magazine size, and as you can see it's not even fully upgraded. I've had other copies of this gun with different perks, and to the best of my memory (although I may be wrong), they had the correct magazine size of 14.
Is it that the full auto perk has a hidden disadvantage of reduced magazine size? I have new shotguns with full auto and their magazine size stays the same, but of course full auto is new to legendary scout rifles so who knows. Or is this some completely unrelated bug?