I too have noticed this, the resupply bag will sometimes replenish you supply pouches at 1 a time and other times it replenishes at 3-4 a time
It seems that this is a bug related to the first life in a match. You start off with 3 pouches and they resupply just 1 pouch (on a supply bag or from another pouch) until you have thrown 9 pouches in total all while being in your first life. Only then it'll start resupplying 4 pouches on a supply box and 1 pouch from another pouch. If you have died once (fully respawned), then you can restore up till 9 pouches total. I doubt it's intended this way. EA plis fix. :<
