Solar cells (and possibly other cells) can be duplicated

[Bounty96hunter]

I found two gaslight flyssa's and a solar cell. When I put a solar cell in a flyssa (with both in my inventory) both received a solar cell even though I have only one. I can remove both solar cells from each of them. I can repeat this to get solar cells so long as both are in my inventory. Gaslight flyssa's stack in the inventory as x2 so I think this is the issue. If I have one equiped and one in my inventory a solar cell is not duplicated.

[John Snail]

Possibly works on all stackable items that can contain something.

[PROMETHIA]

I accidentally did this with gaslight flyssas as well, with regular chem cells.

[John Snail]

Works on recoilers, duplicated a fidget cell by putting it in 2 stacked Grit Gate recoilers.

[Water Ｖａｐｏｒ Merchant]

Might be a problem with stacking in general. I've noticed many unpreserved food items will not stack until you perform an action on them in your inventory, and even then they eventually unstack themselves. This will go on until you preserve them. Same thing occasionally happens with copper nuggets without any modifiers (like bloody or oily).