Coupon discount error on manual orders

[RobertNucci]

Hi,

I'm using PS 1.6.1.11. Creating a manual order from the back office and applying a coupon that discounts 20% only on specific products, the discount is wrongly being calculated on tax included price of that products. This is an issue for orders by foreign countries: the total (tax incl.) that shouldn't even been displayed is also wrong, and lower than the tax excl. price (just because the coupon is wrongly calculated on the taxed product prices).

For example, in the attachment you see an item that costs 200€ (245€ applying the italian 22% tax) and the calculated discount on that product is 49€ (instead of 40€). The total voucher amount (tax excl.) is correct, but the actual total discount from the total is the tae voucher amount! You can see it in the attachment.

This doesn't happen if I apply the 20% discount coupon on the entire order without selecting specific products. And it doesn't happen for frontend orders either.

Is this a bug? Even the generated invoice is wrong (showing the tax included price that is lower than the tax excluded one).

 

Thank you,

Robert

[RobertNucci]

No one noticed this bug?

[Prestashop Addict]

Solution is here