Predictive text and such might be hard to implement. The user is currently typing in a hidden text area where Android can modify the text as it pleases. 
But we only send the keystrokes to the server and I assume predictive text / auto-correct don't generate keystrokes.

And what do you mean by 'keypresses'?

Google Drive detects somehow, that it was loaded from Android browser, and does not let the user edit documents. Maybe we should do the same.

Maybe we could just disable autocomplete as indicated here http://www.w3.org/TR/html5/forms.html#attr-form-autocomplete 
Editing on mobile devices might be needed by some.

I'll give it a try

See also http://stackoverflow.com/questions/14019796/how-do-i-activate-deactivate-predictive-text-for-input-fields-on-mobile-devices

*** Bug 124619 has been marked as a duplicate of this bug. ***

This should work in recent Onlines - although tapping into a word will not give you a prediction, for new / typing it will.