It shows only 43 episodes because we still don't have any news/information about the next episodes yet. You can also check the Episode Disccusion subforum to learn about upcoming episodes
I am saying it because the info for 42-43 was revealed almost a month ago (or may be even earlier). And if there will be episode 44 in this season it will be up in 12 days and we still don't have any information on it.
So it may be a possibility that this season will have only 43 episodes.