Skip to main content

This content has been archived and is no longer being updated. Links may not function; however, this content may be relevant to outdated versions of the product.

Support Article

Pega Web Mashup resize script behavior incorrect



Mashup resize script does not resize correctly post upgrading to Pega 8.2.1. Pega Mashup does not load and a Cross Origin Read Blocking (CORB) message displays in the Developer Console on refreshing the website with Pega gadget (iFrame) in it. Pega Mashup loads successfully and no issue occurs on the second refresh. The Mashup resize script continuously attempts to resize the iFrame where Pega is rendered on the third refresh.

Error Messages

Not Applicable

Steps to Reproduce

1) Create a Web Mashup for portal display
2) Add Mashup to the Web page. The iFrame does not have the expected size and an extra scroll bar is created

Root Cause

A defect in Pegasystems’ code or rules. Mashup scripts do not download as expected. A change is required to read isWebMashup from root of the stack in generate layout Rule-Utility-function (RUF). In the Single-Page Application (SPA) case, doharnessResize API must be explicitly invoked to set proper height on iFrame.


This issue was reported as a bug to be remediated in Pega 8.2.1 patch release.


Published December 17, 2019 - Updated December 2, 2021

Was this useful?

0% found this useful

Have a question? Get answers now.

Visit the Collaboration Center to ask questions, engage in discussions, share ideas, and help others.

Did you find this content helpful?

Want to help us improve this content?

We'd prefer it if you saw us at our best.

Pega Community has detected you are using a browser which may prevent you from experiencing the site as intended. To improve your experience, please update your browser.

Close Deprecation Notice
Contact us