This is still an issue after 9 years..... and it's vanilla. By using only ZEUS EXTENDED mod, jumping in T-100, and having AI as Commander and Gunner. Go manually into commander slot, use almost all ammo, switch back to driver/gunner. Spawn some enemy AI, and after commander uses all of it's ammo, he constantly wants to reload gunner's weapon. I'm very surprised this wasn't reported over those 9 years again. I might go submit new ticket, unless someone from this thread reads this.