Bug? Relative discounts are applied as absolute values.

I believe I found a bug in the invoice module of accounting. Percentage wise product discounts are applied as absolute values. It displays correctly when editing the bill, but the final bill is with absolute values. I hope this is the right place to report?
This was working in the past, all my invoices are defunct now :/

I tried it, but t doesn't work. When I enter an email address there's a pop note that email has been already taken. Does it mean we can't add existing user to the company we created?

world of solitaire

it seems the discount type, absolute vs. percentage cannot be changed after initial creation of the invoice? Also it would be nice if a percentage sign would be shown for relative discounts.