Error occurs when embedding external application in to Pega app
Error occurs on embedding a legacy application (built for HTML4) in to the user built Pega application using an iFrame.
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Steps to Reproduce
Use the iFrame to embed a legacy application (built for HTML4, not the standard HTML5) in the user built Pega application.
A third-party product issue: Expected behavior of the Internet Explorer 11.
Here's the explanation for the reported behavior:
The Internet Explorer 11 browser enforces the parent Document mode to its child or embedded iFrame Documents.
As a local-change, emulate the outer or Pega document that is running in the Standard mode (HTML5) to run in the Legacy Quirks mode (which is not supported beginning Pega 7 Platform).