Noticed you guys just updated this...
There is a bug with text input. If you tap the small globe on your iPhone keyboard to change input languages, a white screen scrolls up, obstructing your view and making it impossible to see, edit, or even send your text.
The only solution is to be to in the input mode you want, *before* you go to open up a keyboard in a chat window.
Rdguoteed about
Lext Talk - Language Exchange!