Not sure if this has been reported, but there are two things.
1) It seems ammo is not stacking properly. Specifically we have a character with .38 Rounds in their inventory which are there from when the character was generated and using the Equipment packs. I added .38 rounds using the items list (Dragged and dropped the lightning bolt) to the party sheet and when dropping and dragging it from there to the character sheet it creates a new entry.
Attachment 55528
2) I think this is less a bug and perhaps just an engine limitation but all the Equipment packs for tag skills are present except Small Guns (which is a very popular choice in most campaigns I imagine). For reference that tag skill gives the player a random amount of ammo for a gun they already possess (generally a pipe gun or 10mm).