The report page remains in limbo state after a Back navigation

[softvision-sergiulogigan]

Environment: Browser / Version: Firefox Nightly 72.0a1 (2019-10-24) Operating System: Windows 10 Pro

Prerequisites:

• Use a new profile.

Steps to Reproduce:

1. Navigate to https://staging.webcompat.com/issues/new
2. Follow the flow to log a new issue.
3. Click on the "Report via GitHub" button.
4. Click on the browser's Back button.

Expected Behavior: The report page is displayed correctly.

Actual Behavior: The report page remains in limbo state.

Notes:

Watchers: @softvision-sergiulogigan @softvision-oana-arbuzov @cipriansv

[miketaylr]

The report page remains in limbo state.

To clarify: the previous state of the form is retained when clicking back.

This is also true for the form v1 -- it seems like the browser is holding on to form values to be nice. I think we could fix this if we wanted to.