Vehicle Combat

I'm running a sci-fi setting game and I noticed that when I add NPC's to the role of gunner on a ship it automatically accounts for the size difference but when a PC sheet is attached it does not. When they're fighting ships of multiple sizes it makes it difficult to keep adjusting modifiers with each target. Is this a known bug or is it just something wrong with how I've been doing vehicle combat in SWADE. I assigned the PC's to their role on the ship (certain characters using certain weapons) then add them to the combat tracker. I do the same with NPC's in their ships and add them, and when targeting and firing it accounts for the size difference for the NPC attacks but not the PC attacks.