Not able to Change Gantt Chart display view from Monthly to Daily

[iamsank8]

I am not able to view data in daily view, even if I try to change period to "DD" instead of "MM". I have monthly data as well as quarterly data which is displayed correctly spanning a whole month or quarter respectively. But I want to view Daily view of the same data, how can I do that?

[martynasma]

Can you post your chart on codepen/jsfiddle?

[iamsank8]

Here is the demo I created with code pen.
https://codepen.io/Iam_Sank8/pen/oNggomy

[zeroin]

It's quite complicated to understand your data, but from what I see dates in your data are monthly, so no surprise that when you change period to "DD" nothing changes.