The new version v0.2.2 does not display correctly in IE9. Firefox, Chrome, Safari, Opera are correct.
The older version v0.1 of this plugin does display the widget areas correctly in IE9.
Unfortunately I've currently not the time to look for the detailed reasons. I use the divider widget with option break and clear combined with widgets from the plugin 'Spots'.
You can see the correct display at the footer of eplus-gruppe.de.