In the version I have downloaded from Google Play, the Back button will close the app rather than showing the screen last used before the actual one.

This is highly frustrating as the back button is so intuitive for most users that they will close down the app accidentally as they did not use the "back" button at the top left of the Moodle Mobile App.

I hope I haven't missed an issue describing the same behaviour. I looked for it, honest! :-D