Theres a bug that reverts some accounts to using up characters for attached photos. @Support doesnt reply and theres no way to reach anybody at Twitter to report this bug.
Attach an image and takes up 24 out of 140 characters even though that was changed last year. Delete your saved account from the Twitter app and add it back in and you get the full 140 characters even with an image attached. But this is temporary. It reverts back to the old way where an attachment image uses 24 characters until you repeat the process of deleting and adding you account.
This bug is maddening and nobody at Twitter seems to know about it! And its impossible to get in touch with someone from Support!
iPedro about X, v6.75.2