I have exported apk with Cordova and it works fine on devices with hard keys (home, back), while on devices with on screen keys white blank screen is shown. It looks the game itself is working, there is sound, if I click on the places where there are clickable items, it works. But screen stays blank.
This is the game:
On the side note, that is the first game made by a student of mine, 12 year old girl.