What did you do to cause this? Create a ticket with backslash character in Summary. Go back to ticket listing. Observe.
What page were you on? Tickets
What PHP and MySQL versions do you run? dev-lang/php-5.3.13 dev-db/mysql-5.1.62-r1
Describe the defect: Backslash character is not displayed in the Tickets listing. If you click on the ticket details, it is there. I have added backslash character to this ticket, so you can observe the defect on it.