I haven’t checked if anyone has reported this yet, but it’s probably a rare bug so I thought I should report it and my guess as to the cause, so it doesn’t get missed by the team.
The last couple of days – certainly yesterday (March 1) and also today (March 2), but I’m not certain whether or not it also happened on the day before (February 28) – the Review Activity graph on the dashboard page has not been showing the data point for the current day. For example, today is March 2 (in my timezone, it is 10:05am, UTC 15:05, Japan 00:05 (next day, March 3, I guess)), however the Review Activity graph only shows data points from the date range Feb 2 to March 1. I.e. yesterday’s # of reviews is the last data point on the graph. That’s a total of 28 days (4 weeks), which I’m not sure if that’s typical or not (does it normally show 30 days? Don’t know).
Since this seems to be a very recent bug – I’m fairly certain it was not present say on the 27th of Feb – I have a suspicion that this may be a subtle bug related to the fact that February only has 28 days normally (and perhaps involves some sort of issue with leap years, when Feb has 29 days?).
I suspect that by April 1, the bug will ‘disappear’ on its own, or possibly even within a week or something. Thus, I suspect this kind of bug may have gone unnoticed for a while, since it (probably) only shows up at certain times of the year.
Of course, it could be a coincidence of the timing. Maybe it’s completely unrelated to the current date. Just a hunch.