argoproj.github.io - Page not found when returning to previous page

[karlcow]

This was initially reported on webcompat/web-bugs#56673

URL: https://argoproj.github.io/projects/argo-cd

Browser / Version: Firefox 80.0
Operating System: Windows 10
Tested Another Browser: Yes Edge

Problem type: Something else
Description: Clicking on "argo rollouts" leads to rollouts. Then clicking back leads to rollouts again, only that this time it hists a route which does not exist.
Steps to Reproduce:
Clicking on "argo rollouts" leads to rollouts.
Then clicking back leads back.
Automatically I am sent to rollouts again, only that this time it hists a route which does not exist.

This does not happen with other browsers.

View the screenshot

This also reproduces on Safari.