Changing default language will not change the site TITLE or DESCRIPTION!

I change js.login.header_title activate set locale from accept language header and it will load the correct header_title according to the locale, but not changing the title and the description?

There is no way to overwrite the UI version using the locale from the server and client language specific files? I want the title and the description to be other language not English when the forum is used by Spanish people. :face_with_raised_eyebrow: