Derived from T259795 — is there a way to optimize the app’s back button behavior?

Steps to reproduce

1. Visit an article page, e.g. Kamala Harris
2. Use the search in the bottom toolbar and look for Ayanna Pressley
3. Visit the Ayanna Pressley article
4. Tap the Back button at the top left

Expected result

I’m back on the Kamala Harris article page (where I started my journey).

Actual result

I’m taken back to the Explore feed.