Paypal plugin 3.0.18, payment type "Shopping Cart" sends Sales Tax as discount.

[safire]

JM 3.6.5, VM 3.0.18, PHP 7

Paypal plugin configured for payment type "Shopping Cart" passes to PayPal the Sales Tax value as a discount.

Order total sent to PayPal is incorrect.

We receive the notice: An error with your payment method paypal on your store. The details are logged in the file paypal.5.log.php

Here are the details:

ERROR IPN notification with invalid amount or currency or email