Keyboard collapses when scrolling the page

When I have a series of TextInput laid out vertically, I would scroll the screen to the next input to continue filling in the next TextInput. In the normal behaviour, the keyboard would stay while I scroll. However, for tabris.js, doing so would collapse the keyboard, forcing the page to re-calculate the layout again, which takes a while for complicated layouts. I'm guessing that it is because the scrolling event moves the cursor out of the current TextInput, firing the blur event and thus closing the keyboard.

This may be a bit related to #80

Android 4.4.2