That's what is intended -- it shows the items currently on the frontpage. So it will not show entry from the previous days because they are no longer on the frontpage. (The UI should not show the previous days in this case, and maybe there is something more I could be doing to make more obvious what is supposed to be happening).
Curiously the entries from April 6 that do show up is a bug due to an issue I had with the process going down for a number of hours, leaving those two entries not being properly updated to remove the 'homepage' flag.
That's what the 'all' option does. It shows all items that made the front page that were submitted on any given day, whether it was on the front page for 2 days straight or for just a few minutes.
