Calculation Widget seems to be buggy!

Hi I am using your calculation widget on my form and it seems to be buggy. When I input the dollar amount and the quanitity for the calculation to populate the first field it doesn't render the calculation. I would have to go over these two fields again before the calculation could start. It seems like once I do this all the other lines on my forms processes. But if I dont, none of the calculation on the form renders. Could this little bug be fixed? 

Thanks, 

Thank you for contacting us.

I have checked your form and it seems to be working fine on my side.

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