When Twitter redirects the user during the Browser sign in flow, it uses the callback URL specified in the application account, not the oauth_callback specified when creating a signature.
More specifically: when requesting an access token through OAuth, I specify the oauth_callback as ‘http://local.------.com:8080’, but Twitter redirects me to ‘https://www.example.com’, which is my placeholder Callback URL in my application settings.
(Also, some side notes: the Subject and Category are reset when previewing posts you submit to the discussion board, and the ‘Subscribe to this discussion’ option at the bottom doesn’t save. And: http://cl.ly/image/203r3S2J3H0a)
Thanks for the help in advance!