400 error is received sometimes when attempting to report with Github

[ksy36]

When it happens, submit_type (github/anonymous) is missing in the form field:

[2021-09-10 11:59:17,830] INFO in views: 192.168.0.239 b'https://www.avis.com/en/amp/home'
[2021-09-10 11:59:17,830] INFO in helpers: is_valid_issue_form: form[submit_type] => empty submit_type value
[2021-09-10 11:59:17,830] INFO in helpers: is_valid_issue_form: missing param(s)? => set()
[2021-09-10 11:59:17,830] INFO in helpers: is_valid_issue_form: experiment branch => Unknown branch
[2021-09-10 11:59:17,830] INFO in helpers: is_valid_issue_form: reporter ip => 192.168.0.239
[2021-09-10 11:59:17,830] INFO in views: 400: POST request w/o valid form (is_valid_issue_form).
192.168.0.239 - - [10/Sep/2021 11:59:17] "POST /issues/new HTTP/1.1" 400 -