Got the same problem.
I tried to translate my language file to different languages like german or spanish but some characters won't work.
Like DEFER it's about ö,ü,ä and others like á or â. They don't appear ingame.
So, there must be a way to make these characters aviable for I know that the original language files CAN actually use them.
You can just copy and paste those symbols right onto the extra_german.lang file with those symbols you are showing me.
That's the problem, it will not work.
Anybody got a solution for this?
Greeetings
Dr4konite