Go to Design / Library / Layouts / Zoom Image Layout / Magic Zoom Styles
Scroll to the bottom and add a new line:
Code: Select all
#product-page-body form {overflow: visible !important;}
P.S. Phone / tablet based web-browsers don’t have many controls so it may be quite difficult to get yours to load a fresh copy of the updated pages.
You may need to try on a different phone (that hasn’t recently accessed your site) to see if it’s now working OK.