Steps to reproduce:

1. Have a project with both a Service Desk and Agile Board enabled on the project.
2. A customer raise a request via Customer Portal. At this point, the request is accessible in the Customer Portal by the customer.
3. Navigate to the project's board by another user
4. Click on the Task title that was created earlier
5. Now you should see the Quick Panel on the right side of the board
6. Click on the three dots (...) on the top right side
7. Click Edit from the drop down
8. Try to edit any field (such as Component, Priority, etc..) and then click Update

Result:
The Customer raised the request cannot see the request any more in his Customer Portal

Expected Behavior:
The customer should be able to see the request he raised in his Customer Portal