I have a use-case where we don’t want end-user to select the old dates either they can select today or any date after today.
In the configuration we are using the allowInvalid: false but looks like this is not working and also there is some issue with minDate: new Date().
I think if the date is invalid then it should show an error message on the cell or it will clear the cell.
Please check the jsfiddle -
http://jsfiddle.net/xmpqdavy/