This is failing consistently for me. It is moving the icon about halfway off the first page, which seems to be causing it to "snap" back onto the first page as the rightmost icon.

Changing this line to `x2 = screen.size['width'] * 1.33` seems to get the icon to consistently end up on a new page for me, but it's page 3, not page 2. It seems to skip right over page 2 for some reason. Is that a bug (in either gaia or marionette)?