We're upgrading our PEGA platform from 7.1.8 to 8.3.1, and we recently got reported with blank page issues frequently.

After comparing with PEGA7 version, we found:

• With PEGA8, after clicking on a show harness button, there will be a blank page shown. And this blank page will keep showing until the content of new harness was responsed.
• With PEGA7, the old page (previous one) will kept showing until the content of new harness was responsed; so, there will be no blank page showing.

The Mashup code we're using as below:

<div id="IACGadget"
data-pega-gadgetname ='IACGadget' 
data-pega-action ='OpenWorkByURL' 
data-pega-action-param-query='[email protected]'
data-pega-action-param-model ='' 
data-pega-action-param-readonly ='false'
data-pega-isdeferloaded ='false' 
data-pega-applicationname ='BPMApp' 
data-pega-threadname ='bpmdev8-20201209101826' 
data-pega-resizetype ='stretch' 
data-pega-url ='https://mtkdapt:443/prweb/IAC/' 
data-pega-action-param-parameters ="{'pzSkinName':'ApplicationSkin','pyMashupSkeletonName':'pyDefaultMashupSkeleton'}"></div>

We've also tried to set "data-pega-isdeferloaded" to true, the Mashup won't work at all if the "data-pega-isdeferloaded" was set to true.

Would be appreciated a lot if anyone can help.

Thanks.