When accessing an app direct link or some Jira pages as an unauthenticated user, the redirection to the login page doesn't work

Issue Summary

When accessing an app direct link or some Jira pages (E.g: Issue creation screen) as an unauthenticated user, the redirection to the login page doesn't work.

Users will be presented with a "Something's gone wrong" message.

Here are a few reasons for the app/product link to be used from an unauthenticated user:

• the user session expired and the user tries to reload the page
• the user reloads a page after losing the required permissions
• the user receives the email from a colleague or via email and tries to access it without being authenticated

Steps to Reproduce

1. Access a direct link for an app (e.g. <siteURL>/plugins/servlet/ac/<appKey>/<appPageID>)

Expected Results

The user request is redirected to the login page as it happens with a product URL which requires the user to be authenticated to access it.

Actual Results

No redirect to the login page occurs and the user will see a "Something's gone wrong" message.

Workaround

In certain scenarios, the https://id.atlassian.com/login?application=jira&continue= URL can be provided with the app redirection URL-encoded provided as the continue parameter.