Browser issue with empty box in dashboard area of easy blogging

Hi,
I display two widgets in my dashboard area: the Marketpress Store Statistics and the Easy blogging widget that is found in easy blogging> easy blogging (Scroll down and that's the widget I use to get an image to display. )

When Marketpress Store Statistics is on (which means selected in the Easy Blogging> Add-On> Dashboard Widgets),
a persistent empty dashed widget area shows. You can see a screenshot in this thread: https://premium.wpmudev.org/forums/topic/what-goes-in-this-empty-space/

Mason gave me this code to paste in a must use plugin http://pastebin.com/YiKKU9R7 to force one column of widgets. It works for most browsers and gets rid of the empty dashed box, except for on tablets such as an ipad.

How do I get the dashed box to disappear for these browsers?