I’m sorry to experiencing a (minor) bug.
THE PROBLEM CAN BE SOLVED DISABLING THE FOLDERS ON TOP FEATURE
As the video on bottom, I sorted a folder by name then I pasted a file into it, the file appears as first (after folders) and doesn’t go into its alphabetical position.
It happens in every views, not just the column view.
I also tried to completely reinstall TF, cause this solved the other problem