viewforum.php

I select on sort type:

Display topics from previous: all topic
Sort by : view
type: asc

not sorting, but selecting

Display topics from previous: all topic
Sort by : view
type: decs

sorting topics...

exampel url: http://www.phpbb.com/community/viewforum.php?f=74&st=0&sk=v&sd=d&start=25

if

Display topics from previous: all topic
Sort by : view
type: asc

not sorting true, but clicking page button 2 or 3... shorting by true...