First off, let me thank you guys for this game. Its a massive effort, and it isn’t unnapreciated, I’m lovin it 
i) When engineer drops grenade launcher for another weapon and then returns to the grenade launcher, some wierd stuff happens with the grenade launcher ammo. You lose your grenades for shooting.
ii) For people who load slow and get into the map after warmup, I think their stats never reset. I’ve seen people carry stats over whole campaigns.
iii) Akimbo pistols don’t log stats?