Zend certified PHP/Magento developer

magento2.4.3-p1 Issue with Shipping Flat Rate

Settings on Back end : Stores / Sales / Delivery Method / Flat Rate / Maximum Price to Set Free: If a number is set, delivery should be free for orders above said number.
This works on front-end created orders, but not on back-end created orders: In the latter case, a Flat Rate will always be charged.