Mail send to the customer when any Customer request is created, or Completed, or added the note on customer request.
The link provided in the mail to see it's customer request is broken.
The link generated in mail is
Reason: The 'showPortletDecorator' controller request doesn't exist.
As per the exploration, In rev #925723
we have removed the 'showPortletDecorator' request-map from 'showPortletMainDecorator'