Catapult Pack sometimes duplicates

[Electrohydra]

When unpacking a Catapult Pack, on rare occasions I will place down a catapult placable and recieve a Catapult Pack (Empty), but the original Catapult Pack will not be removed from my inventory, leaving me with two catapults.

I haven't been able to determine what exactly causes this sometimes-bug, but it's happened twice now. (Out of maybe 20 catapult deployments)