Users running a non-download version of Vanilla (pulled from github), on branch release/2019.016 or master from the last 2 weeks should upgrade to release/2019.017 or latest master for security reasons. Downloaded official open sources releases are not affected.
OS Forum comes in 3 languages
The OS forum is displayed in at least three languages here. German, English and French. See the screenshot below. You might want to check this out.