There is an error in the Linux version:
Fontconfig error: Cannot load config file from /etc/fonts/fonts.conf
I believe it is the version of fontconfig-13, where the cache files conflict.
To resolve, create the folder "fonts" in the game directory. Inside the new directory create the file "fonts.conf" with the following content:
<fontconfig>
<dir>/usr/share/fonts</dir>
<cachedir>fonts</cachedir>
</fontconfig>
To run the game, always use the command below:
FONTCONFIG_PATH=fonts ./nw
"./nw" is the launcher's path.
Another solution would be to delete the cache files from the "var/cache /fontconfig" directory, but I don't know the effects.