Data being cutoff in chart with categoryAxis type="date"

Hello,

I have 4 data points on this line chart, and it looks like the last data point is getting cutoff.  (Actually is being combined into the third data point).

Example here: https://jsbin.com/yejage/3/edit

It will show the last data point if I change the categoryAxis type to "category" or even if I change the "Date" value of the last data point to "T05:00:00" as the Time, instead of "T00:00:00".

Am I missing something here?  Would like to keep categoryAxis as type="date" to take advantage of built-in date filtering and formatting.  Would also like to not include the time, even though it is shown in the example.

Thanks for your help.