Edit listing bug

when i click “Edit Listting” i go to url https://www.x.com/add-listing/?eid=y
no problem , when i save change :
If the changes were good, no problem it works.

If the changes wrong (eg: Delete the title of the listing)
He goes to add-lisgin page (https://www.x.com/add-listing/ ) and appear alert.
The problem now when it saves the changes it create a new message