Font problem with Windows Phone 8.0

There is a Font problem with WP8.0, Qt WP apps show squares instead of letters.
For example Try to Open calqlatr project from "Qt\Examples\Qt-5.3\quick\demos", buid and deploy it to a WP8.0 device, and you'll see a squares instead of letters and numbers (see the attached screenshot).
The same problem when I create a new Hello World QtQuick project for Windows Phone.