Seeing unwanted scrollbars on your boxes? No worries! The solution is very easy. Here's how:
While editing in the Zedity editor:
1. Keep your boxes big by dragging the sides of the box
(don't worry, for some boxes, the excess space won't be visible anyway when published)
2. Click outside the box to check for unwanted scrollbars
3. Use the ‘Preview’ button in the WordPress editor to make sure you do not have unwanted scrollbars on your boxes before posting them.