We've seen similar reports and we're currently investigating. Appreciate the report. Also, please sign out and sign in back to see if that makes a difference, thanks.
This is now resolved! Let us know if you still have the problem, thanks.
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
This is now resolved! Let us know if you still have the problem, thanks.