Code displayed in the notifications when a page name has a space at the beginning

STEPS TO REPRODUCE

Preconditions: The email server for the XWiki instance is configured and the user profile has set a valid email address.

1. Login as Admin
2. Create a new user (e.g. U1)
3. Login as U1
4. Go to the Notifications > Settings and set 'Email Frequency' to 'Daily' and 'Details of the changes' to 'Standard' in Email Preferences
5. Set all Pages Notifications to ON (menu and e-mail)
6. Login as Admin
7. Create a page starting with a space in its name (e.g. ' Page1')
8. Edit and comment the page
9. Trigger "Notifications daily email" (as set in user's profile) from Job Scheduler
10. Login as the user (U1)
11. Observe the notification list and the email received

EXPECTED RESULTS

In the notifications for the related events (create, edit and comment), the name of the page is displayed as it was originally created, with the space at the beginning: ' Page1'.

ACTUAL RESULTS

In both the notification list and in the email received, some code is displayed in the name of the page:

 ' Page1'