"Answered" tab is not showing up

Hi,

"Answered" tab is not showing up (shown in screenshot #1) even if there are still "isAnswered = 1" on DB (shown in screenshot #2)





Environment:
osTicket Version: v1.10 (901e5ea)
Web Server Software: Apache/2.2.29 (Win32) mod_ssl/2.2.29 OpenSSL/0.9.8zf
MySQL Version: 5.5.23
PHP Version: 5.5.23