Javascript error SCRIPT16388 when using Adobe Reader Plugin, IE 11, and iframes.

Hello,

Some of our clients are having issues when using the Adobe Reader Plugin for IE 11, our website shows a PDF document in an iframe, but when we try to load a new url into that iframe we are presented with a SCRIPT16388 error in Javascript.

Wondering if this is a know issue, and if the Adobe team has any idea's on how to fix it.

Our same code works in Chrome and Firefox, and it works in IE if we use another PDF reader plugin.

Adobe Acrobat is up to date (20.009.20067)

It may also be worth mentioning that we've been having this issue for months, and it's not the result of a recent update.