I have a bookmarked search to show new posts in the fora in which I'm interested. When I go there, it always shows "page 1 of 5" even if there are many more pages. When I click on page 2, it then shows "Page 2 of 6". Clicking on 3 gives "Page 3 of 7", etc. until I hit the end.

The same thing happens if I just hit "new posts"

If I click on an individual forum, however, it does show "Page 1 of 2323".