Dynamic value == null output as 'null' and not *nothing* after form reset

I have no problem with dynamic attribute value with null value to output nothing into form input but the problem is when the form is reset using dynamic event then the input with null value will literally output the ‘null’ text into the input.

Can I get this to be fixed so that whenever after the form is reset, dynamic value with null value will output nothing instead of ‘null’ text. I use data detail to trigger the form value for update form. The expected cycle is as follows:

click > data-detail + open modal > dynamic form [null value doesn’t output anything - OK ]> close modal + form reset > click again > data-detail + open modal > dynamic form [null value shown as null text - Not OK]