Hidden pages related events notifications are not sent on e-mail

STEPS TO REPRODUCE:

Preconditions: The XWiki instance has the Mail Sending configured. An user is created and has a valid e-mail address set on its profile.

1. Login as user (U1)
2. Set 'Display hidden pages' to YES from user's profile
3. Click on the Watchlist bell
4. Click on Settings, in the right side of Notifications
5. Select Daily for 'Email Frequency' and Standard for 'Details of the changes'
6. In the 'Applications' section set all Notifications to ON (e.g. for Pages, both for 'Notification menu' and for 'E-mail')
7. Login as Admin
8. Create and then update a hidden page (tick 'Hidden page' in edit mode)
9. Create and update a normal (unhidden) page
10. Trigger the "Notifications daily email" job from Scheduler.WebHome
11. Login with the user (U1)
12. Click on the Watchlist bell and observe the notifications received
13. Check user's (U1) received emails

EXPECTED RESULTS

The events (create/update) done by the Admin on the respective pages (hidden and unhidden) page are displayed both on Notification Menu and on the e-mail received.

ACTUAL RESULTS

The events related to the hidden page are displayed only on user's Notification Menu. In the e-mail received, only the events related to the unhidden page are displayed.

I've tested also on XWiki 9.11.2 and the issue can be reproduced.