Back button does not work properly after following manually created link

Steps to reproduce:

1. Create a course, containing a course module (e.g. a Page)
2. Create a label on the course, with some text that links to the URL of the page.
3. Log in to the website in the app
4. Access the course
   • Verify that the "Back" button is visible
5. Click the manually created link to the page
   • Verify that the page is correctly displayed
6. Click the "Back" button
   • Expected: You are taken back to the course page, and can click back again to return to the course list.
   • Actual: You are taken back to the course page, the back button is not visible.