https://bugzilla.mozilla.org/show_bug.cgi?id=1119813#c3 The way I wrote the code to capture the browser data, I have it reacting to events on the checkbox. That's kind of silly. This bug covers rewriting that code so that it continues to ask the browser for browser data when the form loads, but it copies the data into the appropriate place to submit when the user clicks the Submit button.
The Input service has been decommissioned (see bug 1315316) and has been replaced by a redirect to an external vendor (SurveyGizmo). I'm bulk WONTFIXing Input bugs that do not appear to be relevant anymore.