[Calendar] onChange is not called anymore when date is changed without changing hours

[Ikaer]

Bug Report

The change made in #1329 for bug issue #1460 has create regression in our apps. Before this pull, onChange was called at date selection and hour selection. Now its only be called after hour selection.
I understand why it's have been changed, it's definitely more logical to do it that way to avoid multiple UI refresh or data fetch.
But there is a scenario which create a problem (described below).

Steps to reproduce

1. Use a simple calendar (date and time + popup) with the function onChange doing something (refresh ui, ajax call, etc.)
2. Select a first date and time, call to onChange is done.
3. Reopen the calendar
4. Pick only a date, the input is updated
5. Focus out the calendar popup, no call to onChange is made

Expected result

In case of popup focus out, if at least one date have been picked even without picking hour, onChange should be called too.

Actual result

Input have a new date but event onChange was not fired.

Testcase

https://jsfiddle.net/5hcjvk3d/1/

Version

2.8.6

[lubber-de]

We try to figure something out in case the input field already got some date (only then the selection of a date in a datetime field will be updated beforehand)
In the meantime, you may use onSelect instead which is still triggered on every cell click
See https://jsfiddle.net/lubber/derqb5hp/1/

[Ikaer]

@lubber-de thanks for the tip. I didn't think about using onSelect. It will do for now.