I have an order with several items sold, however in sales report only shows the price on the first item

Hi,
From some weeks ago I have ubercart. Yesterday, I had an order with serveral items, the total amount is 50 euros however when you go admin store>reports>sales reports you see in that order an amount of 15euros(which is the price of the first item)

How can it be fix it?

Another important point is that I also have ubercart maketplace, and besides in this case the sold items belong different sellers.

I think that this is a important issue because the sales report is not useful if it doesn´t give an accurate information.

Thank you very much!