WooCommerce Refund Amount Field Grayed Our

This may seem like a WooCommerce defect, but it is not.

The correct way to process a refund, is to

1. Click on the refund button in the lower left area of the order
2. On the order line items, indicate which line items and the associated quantity to refund
3. WooCommerce will calculate the refund amount and taxes
4. Indicate of shipping is to be refunded.

See diagram below: