I'll check, it is probably not related to the title but just a bug due to some other change.
edit: fixed, it is a small bug for the justwatch widget that occured only on entries without IMDb number.

The country can be set by the contributor when he creates the movie page. You are not forced to set it when validating, it is just a bonus for those who want to set it, as anyway we have thousands of movies on the site without country info.
Maybe I could force it for new entries but there is the risk of wrong info if the user does not know which country to put...