@TeamYouTube why does this occasionally happen on mobile device?pic.twitter.com/4D0RWwYll2
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
That's strange! Have you tried deleting the YouTube app, restarting your device & reinstalling the app? Let us know if it works.