This extension adds a fix to Magento 2.x to prevent the admin panel from making an AJAX request to reload the shipping methods section after every change to an address, payment method, or product section.
OSL 3.0
For user guide & full details see: https://www.cadence-labs.com/2018/07/magento-2-fix-admin-panel-resets-shipping-method-after-every-field-change/