Error Message from managed packages displays Javascript as code in Skuid UI

I am evaluating dupe blocking third party managed packages. Many of them display error messages when a dupe is found and use Javascript to show links to those dupes in the error. When the error displays on my Skuid pages, the Javascript code itself displays rather than the error and links.

Any ideas on how to resolve?

A previous post was made on this topic, but never resolved. Here is the link:

I’ve found this issue is repeated for other applications.

Got a reply from one of the companies that produced the managed package. They suggested it might be a missing tag on the visual force page:

The solution to your issue is to add the following tag into your visual force page.
<apex:pageMessages escape = “false”/>

Is this possible?