Browser issue with empty box in dashboard area of easy blogging

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:

Mason gave me this code to paste in a must use plugin 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?