The Page Plugin widget is responsive now, which means that it will try to use the width you set, but will shrink to the container its in. On your site, it's being limited to 232px wide instead of your configured 292px.
The text for "Like" is longer in Italian, which is causing it to wrap in such a small column. If you want the widget to display properly, you'll need to increase the width of that column in your template so that the module can increase to your set width as well.
Thanks,
Alex
Facebook Like Box settings
