diff --git a/apps/web/src/components/pullRequest/PullRequestDetailPanel.tsx b/apps/web/src/components/pullRequest/PullRequestDetailPanel.tsx
index 70533f06488..4081d9760f2 100644
--- a/apps/web/src/components/pullRequest/PullRequestDetailPanel.tsx
+++ b/apps/web/src/components/pullRequest/PullRequestDetailPanel.tsx
@@ -707,22 +707,27 @@ export function PullRequestDetailPanel({
       state: resolvedCoreDetail.state,
     });
   }, [onStateChange, resolvedCoreDetail]);
+  // Both reads below go around the server's cache rather than through it. An ordinary read is
+  // answered from what the server already holds while it refreshes behind the answer, which is
+  // right for a reopen and wrong for a poll: the point of a poll is what that refresh brings back,
+  // and nothing pushes it to a panel already told the old answer, so a poll served from the hold
+  // shows the previous poll's data for good. The invalidation goes first so the re-reads miss
+  // that cache; if it fails, the reads still run and at worst answer from it.
+  const invalidate = useAtomCommand(pullRequestEnvironment.invalidate, { reportFailure: false });
   // Core detail is cheap enough to re-read while this stays open. Activity is heavier, so the
   // revision effect above reads it only after this same pull request reports a change. Keyed by
   // the pull request rather than by the panel, because this one panel shows a different pull
   // request every time it is opened.
-  useLiveRefresh(
-    () => {
-      detailQuery.refresh();
-      setRefreshToken((token) => token + 1);
-    },
-    { key: `pull-request:${reference.projectId}:${reference.repository}#${reference.number}` },
-  );
-  // The button, on the other hand, goes around the server's cache rather than through it: it is
-  // the answer for a reader who can see that what they are looking at is behind. The
-  // invalidation goes first so the re-reads miss that cache; if it fails, the reads still run
-  // and at worst answer from it.
-  const invalidate = useAtomCommand(pullRequestEnvironment.invalidate, { reportFailure: false });
+  const refreshDetailFromHost = useCallback(async () => {
+    await invalidate({ environmentId, input: { reference } });
+    detailQuery.refresh();
+    setRefreshToken((token) => token + 1);
+  }, [detailQuery.refresh, environmentId, invalidate, reference]);
+  useLiveRefresh(() => void refreshDetailFromHost(), {
+    key: `pull-request:${reference.projectId}:${reference.repository}#${reference.number}`,
+  });
+  // The button is the answer for a reader who can see that what they are looking at is behind,
+  // so it reads everything: the detail, the activity, and through the refresh token, the diff.
   const refreshFromHost = useCallback(async () => {
     await invalidate({ environmentId, input: { reference } });
     refreshDetail();