As far as I know this isn't the first time Arsenal have done it , few seasons ago they did the same but after the middle of the season they lost all power even though they are still playing with the same squad let's see if Arsenal repeat it again.
Yes, that's Arsenal. This team has looked good for some time but always loses the consistency of its good game so it always fails at the end of the season. But it's always possible to expect changes especially as Arsenal have a good squad this season. Their players are relatively young and there is a good chance they can still improve, but there are always doubts about Arsenal because they cannot be expected to win in big match.
Until the end of the month, Arsenal will continue to lead the standings with a 1 point advantage over Manchester City and Tottenham. It is interesting to see Arsenal's development and progress this season, it has proven that Arteta has a good capacity as a coach who can help his team grow.