When clicking on the changes list after a chat action, it opens the diff for the entire PR, but the expected behavior is to show only the diff for those recent changes.
This is how the iOS app works today: tapping the Changes list opens the review for the entire PR (the cumulative +/- for the whole agent run), and there isn’t yet a way to scope that view to just the most recent step’s changes. The per-turn file list with its +/- counts is the closest breakdown available right now.
We’re already tracking this on the mobile side as an improvement so those per-step changes open their own scoped diff. I’ll update this thread if it ships.