ServiceNow Links do not properly function in PPT, Excel and Word
When you click on a ServiceNow link in Powerpoint, Word and Excel it will take you to the main page of ServiceNow i.s.o. going to the link's destination. One can only access the links by coping them and pasting them in the browser.
The issue does not include Outlook. From there is it possible to navigate directly to a ServiceNow link destination.
As confirmed by ServiceNow team lead in my company, it is an issue on Microsoft's side.