[otrs] View next page of closed tickets

Hi all, when I wan't to view my closed tickets in the CustomerTicketOverView, I click on "Show closed tickets". If I have more than 25 closed tickets, I have to click on one of the page-numbers to view the next page of closed tickets. But everytime when I view my closed tickets and I want to sort tickets or view the next page of closed tickets, I get the page with my open tickets. Is this a known problem? Thanks a lot! Tobias