Checkout billing address retention and population

[Dawerx]

Hi guys. My checkout stopped prefilling billing address and it is also not populated after refresh anymore on single stores. Other stores work as expected. It works in theme editor (see attachment) but not on live checkout.

Anyone had this issue too? any tips how to fix it? thanks. 

[Dawerx]

I have just figured out that along theme editor address is also populated properly when clicking on abandoned checkout link.

https://${shop-url}/81673290011/checkouts/ac/c1-14398dc527776e72375d138eb9dbc2ca/en/recover?key=39f24092bab5feb698388cf62fb9ea18&locale=en-CZ

[Dawerx]

It should work according to Shopify's official documentation - it worked before, so Shopify what's happening? Customer support did not help at all.

Official documentation states: 
 You can change whether the billing address is filled automatically or left empty.

Documentation link: https://help.shopify.com/en/manual/checkout-settings/address-collection-preferences