scripts/CSharp/Common/Inventory/InventoryInstance.cs

@@ -50,12 +50,14 @@ public partial class InventoryInstance : Node, ISaveable
         LoadFromSaveData();
         InventoryContentsChanged += UpdateSaveData;
         SlotAmountChanged += UpdateSaveData;
+        SavegameService.OnSaveGameReset += SaveGameReset;
     }
     
     public override void _ExitTree()
     {
         InventoryContentsChanged -= UpdateSaveData;
         SlotAmountChanged -= UpdateSaveData;
+        SavegameService.OnSaveGameReset -= SaveGameReset;
     }
 
     public InventoryActionResult AddItem(ItemInstance newItem)
@@ -216,5 +218,17 @@ public partial class InventoryInstance : Node, ISaveable
             }
         }
     }
+    
+    /// <summary>
+    /// Called when a new save is created.
+    /// Needs to do a runtime check because the InventoryInstance is already in existence at the beginning of the first scene.
+    /// </summary>
+    private void SaveGameReset()
+    {
+        foreach (var slot in _slots)
+        {
+            slot.itemInstance = null;
+        }
+    }
     #endregion
 }

scripts/CSharp/Common/Savegame/SavegameService.cs

@@ -19,6 +19,9 @@ public static class SavegameService
     
     public static bool _loaded = false;
     
+    public delegate void SaveGameDelegate();
+    public static event SaveGameDelegate OnSaveGameReset = delegate {};
+
 
     public static void AppendDataToSave( string id, Dictionary<string, Variant> payload)
     {
@@ -130,5 +133,6 @@ public static class SavegameService
     {
         SaveDatas = new ();
         Save();
+        OnSaveGameReset();
     }
 }