blazor webassembly local storage empty on application restart

I use Local Storage in my Blazor application, and when opening/closing my browser it saves perfectly. But when I restart my application, my Local Storage suddenly becomes empty. Any ideas?

I tried looking up StackOverflow and Google for possible solutions, but didn't find anything useful sadly... I hope some of you can help

Code to save:

    string? storage = await localStorage.GetItemAsync<string>("cart");    List<WarehouseItem> orderesItems = new();    if (storage == null)    {        orderesItems.Add(new()        {            Id = warehouseItems[0].Id,            WarehouseId = warehouseItems[0].WarehouseId,            ItemId = itemId,            Quantity = 1        });        string serializedItem = JsonSerializer.Serialize(orderesItems);        await localStorage.SetItemAsStringAsync("cart", serializedItem);

Code to load:

string? storage = await _localStorage.GetItemAsStringAsync("cart");if (storage != null){  var storedValue = JsonSerializer.Deserialize<List<WarehouseItem>>(storage);  CartCount = storedValue.Sum(x => x.Quantity);}

(Don't mind the missing } tags, they do get closed)