Profiles disappear after I close Safari
I created two profiles, but every time I quit Safari and open Safari again the profiles are gone.
Safari Version 17.4.1 (19618.1.15.11.14)
macOS Sonoma 14.1.1
MacBook Pro 13″, macOS 10.15
Maybe this approach is a bit too much of brute force, but I got things back to normal by deleting the entire folder:
~/Library/Containers/Safari
Safari is also much faster at shutting down and restarting after this.