Customer Link - Offline Payment Applies Twice

As the title indicates, If an invoice is sent to a customer by automated email and they follow the link, when/if they confirm an offline payment method has been used. The transaction is applied twice (2x), causing double the actual invoice amount to be applied.

We have just moved to Akaunting in the past week, so not sure if this is a known bug, or we have something setup incorrectly. We are self hosting.

It's also worth nothing, that this doen't seem to happen if they choose the first payment option in the stacking order, but any other options (stacking order 2 onwards) causes the doubling of transactions.

Also further to above, it also appears that even if a payment method is set to NOT show to customer, it still appears as a payment option on the customer link.

And yet even further to last, deleting offline payment methods does not work. The GUI just hangs when you confirm to delete a method.

I've had to go into the database directly to remove.