But it's entirely intentional; we're no longer displaying post-counts on the topic and the member list pages, as we want to place an emphasis on quality of posting, rather than quantity.
Post-counts are still currently shown on user profiles, but we want to make it clear that a post-count is neither a mark of seniority on the site, nor a measure of the quality of a user's contributions to the community; that isn't to say that people with high-post counts are bad, just that we want to make sure users don't see post-count as anything it's not. That said, user post-counts are still functioning normally for the time-being, they just aren't visible in most common areas of the forum.
It will still be possible to see if members are in the Newly Registered group, indicating that they have less than 10 approved posts.