Setting start date only disables previous months and not previous date for current month

[vinuengico]

I'm selecting a date as start date and when setting the option 'startDate' as the selected date, the end date datepicker disables the dates for the previous months only.

eg: If my start date I select to be 30 Aug, 2019 and set this as my start date for End date datepicker, it disables all the date till July, 2019, however I can still select dates in the month of Aug i.e, from 1 - 29 Aug, 2019 are still active.

Screenshot of code and output attached-