Clicking on links from Table of Contents notifications email doesn't direct to the respective event on the email body anymore

Steps to reproduce

1. Login with an user (e.g. U1)
2. Click on a page Notification button and follow the entire wiki
3. Login with Admin
4. Create, update and/or comment several pages to generate some events (e.g. Home/a/b/c/d/e)
5. Trigger "Notifications daily email" from Job Scheduler
6. On the notification email received for the user U1, under the Table of Contents displayed at the beginning, click on some pages

Expected results

When clicked on a page, the view is directed to the respective event on the email page's body.

Actual results

Nothing happens.

The issue could be reproduced also on XWiki 16.10.9 and 17.4.1, but could not be reproduced on XWiki 16.4.0.