I have searched and searched for an answer to this question and everything that looked like an answer has not worked so I guess I will just ask.
I have a couple of <
I have experienced exactly the same issue in my project.
To resolve the issue I have subclassed the EditText and handled the "Back" button press - to make sure that my EditTextclears focus at that moment.
EditText
Check this solution, on how to do it.
Good luck.