gnustep gui localization - UTF8 issues

Hi all!

testing testing before release :) I noticed I get this error on my 
workstation were I have enabled translations.

2021-02-05 14:42:25.777 Ink[22938:100094] File NSBundle.m: 2682. In 
-[NSBundle localizedStringForKey:value:table:] Localisation file 
/System/Library/Libraries/gnustep-gui/Versions/0.29/Resources/Italian.lproj/Localizable.strings 
not in portable encoding so I'm using the default encoding for the 
current system, which may not display messages correctly.
The file should be ASCII (using \U escapes for unicode characters) or 
Unicode (UTF16 or UTF8) with a leading byte-order-marker.


However:
$file Resources/Italian.lproj/Localizable.strings
Resources/Italian.lproj/Localizable.strings: UTF-8 Unicode text

and opening in gvim with utf8 encoding it looks perfect, the same with 
emacs.

The BOM is there... so?

Riccardo