Search in browser history broken

[jdoubleu]

I noticed, that I cannot go back in my browser history, when I used the search. Every time I get to the search, my browser reports a Document Expired error.

Steps to reproduce:

1. Go to the documentation
2. Use the search (e.g. to search for: "validator")
3. Visit a suggested page
4. Now, use your browsers back button (or [ALT] + [Left arrow] for FF)

Expected behavior

I can go back to the search page and beyond. Upon landing on the search, it shows me the recent suggestions again.

Details

Firefox v89

[kevindees]

I'll take a look at this.