The saves are utterly broken. They are responsible for resetting stacks. But they also interact with them and the character page in.... unique ways.
Let me describe them in detail, in how to exploit them, as I am at a loss on how to explain these bugs otherwise.
First method:
1. Start game.
2.Save game.
3. Get wolf meat, experience, coins after killing wolf.
4. Open inventory(not character equipment, inventory)
4. Load previous save. Make sure you have the inventory open before you do so.
5. The wolf meat should still in your inventory, while your character should have no experience.
Second method:
This requires two saves to achieve, and may or may not have weird reactions to spiced meat, so I would not have spiced meat in your inventory.
1. Have a save with a character that has valuable/powerful items equipped(the character and save will be referred to as M1 and S1 for convenience).
2. Have a low-level/new character in another save, with little to no items in this character's inventory. This save will be referred to as S2, and the character referred to as M2.
3.Load S1.
4. Open the M1 character screen . Don't open the inventory or talent page or anything else, only just the character screen. It should show your core stats, and should show your current equipment.
5. Load S2 immediately after opening the M1 character screen.
6. When S2 loads, open the character screen, and only the M2 character screen. It should show M2 as having equipped whatever M1 was wearing. An exception being if S2 is a new game, and you still have the Old Rag equipped on M2. That will still be equipped to M2. You have now cloned your S1 equipment over to S2.
7(optional). Unequip the cloned items on M2, and save in S2. Repeat process and sell items for profit.