iOS 15.1.1 broke Backups

I wanted to move my data from my iPhone 12 Pro Max to a iPhone XS. I needed to use the backup functionality as I needed all my business profiles and business apps to keep installed.

I tried transferring the files with quick configuration. Every time I tried, it failed without any error message. I reset my iPhone 6 times and tried troubleshooting without any notes why it kept failing. Then I did a iCloud Backup just to receive the warning that I need to install iOS 15.1.1 on the iPhone XS to install the Backup. So I set it up as a new iPhone with no data and was searching for a firmware update without finding one.

Does anyone has a solution? Honestly waiting till might release iOS 15.2 is not a solution. I can't believe that they don't show any error messages within Quick Configuration nor do they have mentioned any of the compatibility issues in Apple Support documents.