Problem with partial use voucher

[Myles_UA]

Hello everyone. I have a big problem with a partial use voucher.

I have 4 currencies in my shop. When i create partial use voucher in currency, differ from default, and when client uses part of his voucher, amount that is left in a newly created voucher is in the default currency, not currency that i specified initially for this voucher. Is this some kind of prestashop bug? How can i fix it?

Prestashop version is 1.7.6.1

[Myles_UA]

And also, when i'm trying to add product to an order in back office, it is also reverses every currency to default

 

Edited July 27, 2020 by Myles_UA (see edit history)