Time interval is selected any value, but show time interval is constant

select:
Data->buckets->Columns
Sub Aggregation=Date Histogram
Interval=?

Usually displayed as:

if interval="Auto"  then 
     time display: 10:30, 11:00, 11:30, 12:00, 12:30, 13:00, 13:30, 14:00, 14:30, 15:00, 15:30

if interval="Minute" then
     time display: 10:30, 11:00, 11:30, 12:00, 12:30, 13:00, 13:30, 14:00, 14:30, 15:00, 15:30

if interval="Hourly" then 
    time display: 2016-04-16 11:00, 2016-04-16 12:00, 2016-04-16 13:00, 2016-04-16 14:00, 2016-04-16 15:00

if interval="Daily" then
    time display: 2016-04-15, 2016-04-16, 2016-04-17

if interval="Weekly" then
    time display: 2016-04-11, 2016-04-12, 2016-04-13, 2016-04-14, 2016-04-15, 2016-04-16, 2016-04-17

but:

interval=any, time display: April 11th.. , April 11th.. , April 11th.. , April 11th.. , April 11th.. , April 11th..

You can refer to the Line chart visualize.

@yhgcn

@yhgcn could you include a screenshot?

I am interested to see what the range of time you have in the timepicker (top right hand corner of the screen). And I don't know of an any option for interval on date histograms. If its custom, then you can specify the interval type (default is 2h).

The display of clock string is too long and not concise. I think it is unnecessary to display the clock string in seconds and milliseconds scale.
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