When did this start? I read almost exclusively through the ihackernews.com mobile site. I just checked and it does not implement the more button and only shows

When did this start? I read almost exclusively through the ihackernews.com mobile site. I just checked and it does not implement the more button and only shows the first 40 or so comments. It looks like I have been missing out on the end comments of popular threads without realizing it. :(