ive noticed since release that if you have the ammo box in your hands, throw it down and someone runs through the space it fails to deploy and cant be redeployed for around 10secs, in a busy area this can be a real pain, you have to stand around and wait, which can mean death if you or a HA needs ammo, you literally have to fight to find a clear space where you can drop it without being run infront of. it would be much better if the box would deploy regardless of someone stepping infront of you, the teleport rooms in the main biolabs spring to mind as a prime example of why this is not a good mechanic
Its a pain but its not half as annoying as when you drop it change to the repair tool to heal a max and then bang forced change back to gun so you shoot the guy.