New module sale_discount: total amount not updated

I am trying the new ‘sale_discount’ module.
When I choose an product, a quantity, and a discount: the amount of the discount is correctly calculated, the unit price is updated, but not the total amount.
If I assign a new unit price, the discount is updated, as well as the total amount
Do you have the same behavior?

I guess it need to be reported on

It is done: Issue 9823: Total amount is not updated when we change the discount rate. - Tryton issue tracker

Perhaps it is related to this one too.