Why does imdb-links posted on facebook always turn up as Danish titles in our group?

In a film-group we have on Facebook with 2000 members uses linking to imdb when we talk about movies, but links always come up with the Danish title, which often looks stupid. It's awfully annoying! 
Can anyone tell why the group chooses Danish language, when the group is not based in Denmark?
It's not just me seeing this, but all users.
And the imdb-titles have both English and our native title when this occurs.
This title, Lifeboat which is called "Livbåten" in our language turns up as the Danish "Redningsbåden".
https://www.imdb.com/title/tt0037017/