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Support Article

Leaving pega iframe in IE11 causes buttons to be inactive



User has an IAC implementation of their Pega application with a custom code to handle clearing of pega cookies when the end user clicks away from IAC loaded harness. When users click away, they observed a pop up giving an option of "Leave this page" or "Stay on this page". And when users choose to stay on the page, the action buttons are disabled and there was no network call done upon clicking them. User expects the IAC loaded harness to remain fully functional upon staying on the page.

Error Messages

no errors displayed

Steps to Reproduce

1. On any of the Change Fund pages, if we choose to navigate back to FNC, there will be a pop-up asking the user to either ‘Leave this page’ or ‘Stay on this page’.
2. If we select ‘Stay on this page’, the action buttons are all disabled.

Root Cause

The root cause of this problem is defect/misconfiguration in the PRPC operating environment.

The gadget HTML page had an onbeforeunload listener in place to clear PRPC sessions. this would call a JavaScript function. If the function returned any value, that value is printed on the pop-up encountered by Users. This is default IE behaviour.

To resolve this, and prevent popup, simply return nothing in the logoff function called by onbeforeunload listener.


This issue is resolved through the following local change:

In the Javascript function called by onBeforeUnload listener, changed "return true;" to "return;". With no value returned, pop-up is eliminated.
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Published January 31, 2016 - Updated October 8, 2020

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