Custom inline editor cannot customize a date editor

The link is here:
http://snippet.dhtmlx.com/5/7dfcfd5ee

Hello,
There is no datetime input type:

If you try adding it as an HTML element, it will also have the default input:
http://snippet.dhtmlx.com/5/d8cfb7f0a

You need to use the date or datetime-local value:
http://snippet.dhtmlx.com/5/0d455a32d
http://snippet.dhtmlx.com/5/6d9c1c29b

Another problem is that the date editor doesn’t work in Internet Explorer 11

Hello,
It is not a Gantt issue.
That question is answered here: