Background: Guest access to lesson (no questions, just content) is needed via the lesson's direct URL as lesson is linked on a 3rd party website. Client has users utilizing assistive technology such as screenreaders.

Problem: If you have already visited another guest access page on the site in your browser session, the lesson opens fine. If you start a new session and the lesson link is the first guest access activity you visit, the lesson does not open, but instead redirects you to login. This is causing end-user confusion as a population of users will not have accounts on the site and still need to see the lesson.

Steps to Reproduce:

1. Create a course with guest access enabled and autologin guests enabled in Site Administration
2. Ensure guest role has permission of mod/lesson:view set to Allow
3. Place a lesson in the course with some sample content pages (No essays - essays will provide an access error as guests cannot write to the database)
4. Copy the direct URL to the lesson
5. Open a new browser session (such as incognito window) and visit the lesson
6. Note that you are typically redirected to the login page

Please note that the same behavior does not appear if using a Page in a course with guest access when following the above steps. Also, the same behavior occurs if the lesson is on the homepage.

Need: Direct URL to a lesson should be permitted in a new browser session and not require the user to click "Access as guest" button.