Context

No response

Bug description

Going back to a page via browser back button with Instant loading enabled in general works fine. However, going back via browser back button to the the first page that was loaded doesn't work. To illustrate the idea:

• user types https://gaseri.org/en/ in the location bar (first page)
• navigates to https://gaseri.org/en/introductory-presentation/ via the link in the navigation bar (second page)
• navigates to https://gaseri.org/en/people/principal-investigator/ via the link in the navigation bar (third page)
• user presses browser back button, goes from third to second page and URL https://gaseri.org/en/introductory-presentation/ and its contents load fine as expected
• user presses browser back button, goes from second to first page and URL changes to https://gaseri.org/en/ in the location bar, but the contents of https://gaseri.org/en/introductory-presentation/ are still shown

This is just to illustrate what is working and what is not; my minimal example attached below has only two pages that reproduce the issue.

I tested latest versions of Firefox and Brave, same issue. Finally, this is a regression from introduced in 9.0.0b1 and later versions of Material for MkDocs; version 8.5.11 works fine.

Related links

• Reporting a bug
• Instant loading

Reproduction

example.zip

Steps to reproduce

1. Run mkdocs serve
2. Open http://127.0.0.1:8000/ in browser
3. Click on link to Page 1
4. Click back button in browser to go back to index page
5. Browser keeps displaying the contents of Page 1

Browser

No response

Before submitting

• I have read and followed the bug reporting guidelines.
• I have attached links to the documentation, and possibly related issues and discussions.
• I assure that I have removed all customizations before submitting this bug report.
• I have attached a .zip file with a minimal reproduction.