Checkout this thread I found: https://wordpress.org/support/topic/refund-amount-field-grayed-out/
Apparently there is a new way to do it by entering the refund amount on the line items above.
Yes, I am having the same issue. I am seeing this on all my Braintree and Paypal payment gateways. I wonder if this an issue related to the latest woocommerce update.
Thanks, that worked perfectly!
Thank you for getting an answer so quickly.
