The mod Solar Halo has an item called Star Chart.

Unlimited Ammo picks it up as ammo and creates an unlimited clone. While one could consider this a bug, I woudln't. Actually I really like it. Or rather, I would, if there was no spoilage.

Star Chart is not consumed like regular ammo, instead, it has a 5 minute spoilage timer. Unfortunately, the cloning of that item into the unlimited version clones the spoilage timer as well.
Could you consider removing spoilage from the cloned/modified versions? This might improve similar situations as well.