Cancel temporary case causes Empty Work Item Handle
We are using Pega 8.4.0 and have set up a simple demo case built under cosmos (built-on application Theme-Cosmos with 2 small application rulesets) to test features in close to OOTB state. In this scenario
Inside the UserPortal or DesignerStudio
Start case which is set as a temporary object
First flow starts with an assignment shape for the user
User clicks "Cancel" button
Receive an error pop-up "Empty Work Item Handle".
We have a similar demo case built on application UIKit, but it works as expected. The case closes without messages (using case worker portal or designer studio).
Is there a solution to allow the case to exit cleanly?
***Edited by Moderator Marissa to update Platform Capability tags****