Histogram bar graph, first minute gets clipped

Another histogram observation: By default the bar graph shows 6 minutes. As the search updates (e.g. Update every 5 seconds), the newest minute bar slowly grows as expected. But what is not expected is the old minute bar shrinks.

Based on this I can tell that the total range of the histogram is exactly 5 minutes, or 300 seconds. That means as time progresses, the start range keeps moving forward. But this isn't a good representation of the first minute bar which should consider the entire minute.

As an example, at 12:47:39 the histogram range is 12:42:40 to 12:47:39. So the first minute is missing 20 seconds and this is why the bar shrinks with each update.

I propose that instead the histogram range uses a floor of the start minute. So at 12:47:39, the histogram range would be 12:42:00 to 12:47:39.

thanks