Catalog task related list record opens new record by default on Service Portal Requested Item record.
Steps to Reproduce
1. Log into Service Portal
2. Search for the catalog item "Access" and submit a request
3. Open the generated requested item with the form "id" or after generating the requested item, replace the ticket view URL from:
<instancename>/sp?id=ticket&table=sc_req_item&sys_id=sys_id_of _your geneated _req_item&view=sp
<instancename>/sp?id=form&table=sc_req_item&sys_id=sys_id_of _your geneated _req_item&view=sp
4. Scroll down to "Related List"
5. Click on the Catalog task record in related list
Notice that a new record is rendered in the right pane
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Related Problem: PRB1354810