In the Process-> Notifications tab-> for Action Item( Process)- New Action Item->Notification Body->Links we have links like process validation, process escalation, process flow and the Object Properties Link.
I added this "Object Properties Link" in my notification and saves and run the process to get notification email. In Notification email it is not showing the link to properties page and it just shows plain text as @[:odf.ObjectidProperties!:Click Here].
If I add other links like Process Validation, process escalation etc all are displaying the correct hyper link to the respective page.
I am on 14.2 with generic patches(184.108.40.206 011 4) applied and we are not using SSO.