Android up navigation behaves differently after locale change from phone settings

Question

Activity-A opens up Activity-B which will open up Activity-C. And Activity B is finished after calling startActivity(intent); Tapping on the actionbar's UP icon we navigate to Activity A under normal circumstances. But after opening Activity-C if we go to device settings and change the locale, resume the activity-C and tapping on UP icon, Activity B gets loaded again.

How can we achieve the normal behavior even if we alter the locale.

For activity-C in manifest we have specified locale also under configChanges

actual value:

android:configChanges="keyboardHidden|orientation|screenSize|locale"

Code Snippet from Activity-B which calls Activity-C:

Intent intent = new Intent(ReaderActivity.this, EPUPReader.class);
startActivity(intent);
finish();


@Override
public boolean onOptionsItemSelected(MenuItem item) {
    if(item.getItemId() == android.R.id.home){
        onBackPressed();
        return true;
    }
    return true;
}