If the product image "bounces" when zoom icons are selected then try this fix:
Go to Design / Library / layouts / Zoom Image Layout / Magic Zoom Support.
Look for the line:
Code: Select all
.mzp-ptab {}
Code: Select all
.mzp-ptab td {width:auto !important;} /* override SD to help IE */
Kudos to Perblaco for determining what was going on.