After upgrading my application’s permissions, new users do not see the upgraded permissions before authentication and they are not applied afterwards.
I am aware of this FAQ: https://dev.twitter.com/docs/faq#6466
My situation is pre-auth. The settings for the app just don’t seem to be updating.
The OAuth settings UI seems to be very buggy in other areas too. Uploading photos always throws an error, even when it has worked. Saving of data often doesn’t update form fields on the redirected page, although refreshing shows that updates did take.
Aside: Even using this discussion forum, previewing my post just now emptied out the values of the Subject and category fields.