I heard this is may be unfixable because not all items have the same IDs... or something. In other words, to stack, they would need to convert one item into a new type. It's clearer with some since they don't even look identical, but... maybe give clusters a go and just convert the item when two IDs in that cluster are being stacked? I'm not a programmer, but this sounds more like a challenge than a limitation
If that's it, it feels as though Larian should rationalise the number of different IDs they use, and agree on a convention that will be used for all healing potions, for example, rather than having different potions that look and behave the same but don't stack. It's annoying when I have to use multiple slots on my toolbar for healing potions, etc, rather than just having one slot to access all functionally interchangeable items in my inventory.
As for items that I wouldn't use via the toolbar such as fish, I'm not fussed. I wouldn't be upset if Larian just decided to only use one fish ID in the game so they all looked the same, but also don't mind having different-looking fish that don't stack.
