Advanced Stock Management - Supply Order Discount Not Calculating Correctly

[ceffylau]

I'm developing a site for a client and they are using the supply order system under the advanced stock management. They created a sample supply order with a line item discount. The end price is correct, but the Total, discount, and Total after discount are not working correctly. 

 

Anyone else seen this issue? Prestashop 1.6.1.6

 

http://www.clipular.com/c/4845789225943040.png?k=Q1EitA_gR6Najj1-5vxvVag0BzQ