There was a post in that thread which was made at 10:59pm (11:59pm presumably for you) and that post has since been deleted. We'll need to look into that.
I think the post was deleted after generating the results of the new posts page, the same can be reproduced in XF1
i deleted the last post in the thread "Mejor canción para terminar un álbum." and reloaded the news post page (without generating a new query) and..
That certainly is plausible and logical. I did actually misread the deletion date. It was only deleted 4:02 PM (5:02 PM) which is much sooner than I believed at the time.
@ge66 can you confirm that you may have loaded that list of new posts prior to the time it was deleted?
I had in mind an older bug (now fixed) that did do some weird stuff when posts were deleted, though this was related to rebuilding of the post position counter and everything seems ok in my testing.
