Zend certified PHP/Magento developer

Magento 2 customer address book in admin section

Autofill Region name in existing address when we are adding new address in customer address book section

i am using magento2.2.6, in that magento, if any customer have many existing address in there address book then admin click on new address button and fill value from auto fill chrome functionality then all region name replace with new region name which are comes from auto fill information so please let me know how may i fix that issue without update my magento.