Issue with Tag Separator Behavior After Jellyfin 10.10.3 Update

[Oleg Kosarev]

In version 10.9.1, the separator in the "Artist" tags was correctly handled with the separator
(for example, Artist1\\Artist2), and Jellyfin correctly interpreted this as two separate artists. However, after updating to version 10.10.3, the separator
is now replaced with an empty space, and after scanning, Jellyfin merges the tags into one (for example, Artist1Artist2).
After the update, the following parameters are set to default:

1. Prepend ARTISTS tag if available — the checkbox is unchecked. (Use the non-standard ARTISTS tag instead of the ARTIST tag if available)
   
2. Use custom tag separator — the checkbox is unchecked. (Separate artist/genre tags using custom symbols)
   
3. Custom tag separator —
   /|;\ \\
   (Symbols to be used as separators for splitting tags)
   
4. Whitelist separators — empty text field (Items that will be excluded from tag splitting, one item per line)
   
   

Question: These default settings were not changed, but now the tags are being merged during scanning. What could have changed, and where should I look to restore the previous behavior? I’m especially interested in the setting “Prepend ARTISTS tag if available.”