Absence Notifications mails Subject Line and Title appearing as an expression

Summary

Absence Notifications mails Subject Line and Title appearing as an expression

Content

Dear All,

We are getting the below expression string as Subject Line and Title in the Absence Approval Notification.

HtTitle.Approvalof0TimeoffRequestfor1from2to3

This issue started appearing after we tried to change the Notification Title using the "Manage Task Configuration for Human Capital Management" page.  The change has been reverted but still, the notification mails are having this expressions in the subject line.

Thanks and Regards,

Christopher.