Clicking a reply quote (or arriving via a thread-panel / search / permalink jump, i.e. an eventId route change) remembers the message that was in the middle of the viewport and shows a Primary chip next to Jump to Latest — 'Back to where you were' — which scrolls/navigates back to it. Nothing is rendered normally; the chip expires after 20 s or once used. Verified headless: reply quote → original 120 messages up is shown + chip; chip → back at the reply, chip gone. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01PPmy3tPq869XDW4njjVaKA