Invoice tax miscalculations

When creating invoices you are allowed to input negative values as item quantities, but at the end when sum is calculated, on invoices index page, taxes are calculated incorrectly. I think it's because the negative value in item quantity is omitted.

Hi Deniz,

Thank you for your feedback. We tried reproducing the issue you had, however, did not have any error. Could you please clarify why you want to put negative values to items so that we can guide you accordingly?