Can't add JetPack custom form using IE9

I was helping a friend who was going crazy trying to add a JetPack custom form to a page.

He was seeing the shortcodes in his post after entering the form, but they would disappear as soon as he clicked Update.

Finally I said, “Let’s try a different browser.” He switched to Chrome and it worked fine.

So the problem appears to be with Internet Explorer 9 (latest version).

Any solution to doing this with IE9?

Thanks,

doug