When e-mail about the received notification is sent, accessing link do the notification doesn't mark them as read in the AdminUI.
Steps to reproduce:
1. Configure Swiftmailer to work locally (example configuration).
2. Create another admin user and name it "admin2".
3. Log in as an admin/publish.
4. Create new content and send it to review to "admin2".
5. Access link which was sent via e-mail.
6. Login as an "admin2".
The notification is marked as unread.
If you publish content in the meantime accessing notification will end up with an error:
See stacktrace.png for more details.