Ammo count bug

Hello I have experienced this issue a few times in ranked matches as it is my main gamemode: Upon being respawned on a deathbox the game sometimes shows the same ammo count you died with regardless of the amount left in the deathbox, I.e if i am carrying 3 stacks of heavy ammo when i died (180 rounds) i sometimes respawn with an ammo count of 180 + any subsequent stacks I pickup. This means I can have an ammo count of 360 bullets and be able to use all of those bullets even though I only carry 3 stacks (180 bullets) in my inventory.
In order to recreate this issue; It seems to be an issue with the equipped weapon upon respawning on a deathbox and I think it only happens if someone has picked up the ammo from the deathbox before respawning. I unfortunately don't have a screenshot to demonstrate this issue as I am on an old gen playstation 4. 
If someone could look into this it would be greatly appreciated as it is an exploit/game bug that players may be forced to use unintentionally resulting an unfair advantage over other players.

kind regards

Thomas 'Maddog' Scott