When was the use of a SuccessFactors custom login deprecated

We have always had a custom login page for employees to see when they log into SuccessFactors. We recently even changed the background for our login page back in October 2022. Recently the location of the Logo we use has moved, so is no longer showing on the login page, to fix this I have changed the HTML and asked SAP to update this via a support ticket.

They have advised that Custom login Pages are now deprecated, but when looking at the KBA mentioned 2088153, the last version was 2020 and if we were able to change our custom login page in 2022, when was it deprecated ?