If I choose Report via GitHub, I can't change my mind and report anonymously

When I completed a report and got the choice of sending via GitHub or anonymously, I chose GitHub. After reading GitHub's terms for letting webcompat submit on my behalf, I decided I didn't want to do that and went back to the form. I got a brief message and red background that the GitHub connection had failed. However, I was then not able to submit an anonymously. The report just shimmers. Steps: 1. Go to https://webcompat.com/issues/new 2. Fill out an issue 3. When I get the choice of sending via GitHub or anonymously, choose Report via GitHub 4. Log into GitHub 5. When I get the notification asking me if I want to authorize the WebCompat app, I choose to read the terms 6. I decide I don't like the terms 7. I click cancel 8. I go back to the form using my browser's back button Expected result: I can click Report anonymously Actual result: The report is shimmering and I can't click either button Possible workaround: Fortunately, I am able to copy and paste the details, so I will be able to file a new report without having to retype everything.