The submission page is kept dirty even though there is nothing more to do.
Steps to reproduce:
1. Submit a bug.
2. Tell Mozilla Firefox to close the tab.
1. "Your help is very appreciated."
2. Firefox asks:
"Are you sure? The data you entered need not have been saved!"
2. Let Firefox close the tab without asking.
Operating System: openSUSE
Version: 220.127.116.11 release
This should be now fixed.