See last answer link - dont work

Hi,

we have one Topic with about 235 replys and at this topic the "see last answer link" in category-view dont work ... All other works. http://screencast.com/t/b6sY9wQjEu1

How can i fix it?

And is it possible to show such a link also in detail view or show all replys by default? Because if we have many replys it is difficult to scroll all page down ...

Thanks
Marco