How to send email notifications and auto-responders when editing a submission?

I have been testing out my forms and I will receive an email (as the person submitting the form) to the e-mail typed into the e-mail section but will not receive any more emails is I re-submit the form again.

Is this is glitch and how do I fix it?

Email notifications are send automatically when a submission is edited, but auto-responders are not send automatically when editing the submission, this can be done by enabling the option, so you need to open the email wizard and then edit the email auto-responder, once there click on the Advanced tab and active the option to send the auto-responder email on editing the submission: 

This will send an email to your submitter when the submission is edited, please try it and let us know if you need more help, we will be glad to help you.