diff --git a/src/browser/utils/messages/transcriptRenderProjection.test.ts b/src/browser/utils/messages/transcriptRenderProjection.test.ts
index 85c3dfdcef..aeb80fe464 100644
--- a/src/browser/utils/messages/transcriptRenderProjection.test.ts
+++ b/src/browser/utils/messages/transcriptRenderProjection.test.ts
@@ -701,7 +701,7 @@ describe("operational bundle coalescing", () => {
     expect(infos[4]).toMatchObject({ key: "bundle:search-1", position: "member" });
   });
 
-  test("active and just-settled tail bundles stay expanded until a visible event or turn end", () => {
+  test("keeps active bundles expanded while completed bundles default collapsed", () => {
     const active = computeOperationalBundleInfos(
       [reasoning({ id: "think-1", isStreaming: true })],
       {
@@ -721,7 +721,7 @@ describe("operational bundle coalescing", () => {
     expect(justSettledTail[0]).toMatchObject({
       position: "head",
       state: "settled",
-      defaultExpanded: true,
+      defaultExpanded: false,
     });
 
     const afterVisibleEvent = computeOperationalBundleInfos(
diff --git a/src/browser/utils/messages/transcriptRenderProjection.ts b/src/browser/utils/messages/transcriptRenderProjection.ts
index 49283ad90a..12bac55753 100644
--- a/src/browser/utils/messages/transcriptRenderProjection.ts
+++ b/src/browser/utils/messages/transcriptRenderProjection.ts
@@ -178,7 +178,7 @@ export function computeWorkBundleInfos(
 
 export function computeOperationalBundleInfos(
   messages: DisplayedMessage[],
-  options: ComputeBundleInfosOptions
+  _options: ComputeBundleInfosOptions
 ): Array<OperationalBundleInfo | undefined> {
   const infos = new Array<OperationalBundleInfo | undefined>(messages.length);
   let index = 0;
@@ -224,9 +224,7 @@ export function computeOperationalBundleInfos(
     const state = frozenEntries.some((entry) => isActiveOperationalMessage(entry.message))
       ? "active"
       : "settled";
-    const hasSubsequentVisibleEvent = hasVisibleEventAfter(messages, index);
-    const defaultExpanded =
-      state === "active" || (options.isTurnActive && !hasSubsequentVisibleEvent);
+    const defaultExpanded = state === "active";
     const key = `bundle:${first.id}`;
     const summary = summarizeOperationalBundle(frozenEntries.map((entry) => entry.message));
 
@@ -468,16 +466,6 @@ function computeWorkBundleDurationMs(
   return endTimestamp - startTimestamp;
 }
 
-function hasVisibleEventAfter(messages: DisplayedMessage[], startIndex: number): boolean {
-  for (let index = startIndex; index < messages.length; index++) {
-    if (!isOperationalBundleMemberMessage(messages[index])) {
-      return true;
-    }
-  }
-
-  return false;
-}
-
 export function summarizeOperationalBundle(
   messages: OperationalBundleMemberMessage[]
 ): OperationalBundleSummary {
diff --git a/tests/ui/chat/transcriptDensity.test.ts b/tests/ui/chat/transcriptDensity.test.ts
index d1b1a2ced9..4e125bbe14 100644
--- a/tests/ui/chat/transcriptDensity.test.ts
+++ b/tests/ui/chat/transcriptDensity.test.ts
@@ -147,7 +147,9 @@ describe("Hyper transcript density", () => {
         return button;
       });
       expect(firstOperationalButton.textContent).toContain("Ran 5 operations");
+      expect(firstOperationalButton.getAttribute("aria-expanded")).toBe("false");
       expect(view.container.textContent).toContain("Please validate with typecheck too");
+      expect(view.container.textContent).not.toContain("src/auth.ts");
       expect(view.container.textContent).not.toContain("make typecheck");
       expectTextOrder(
         view.container,
@@ -170,6 +172,7 @@ describe("Hyper transcript density", () => {
         }
         return button;
       });
+      expect(failedOperationalButton.getAttribute("aria-expanded")).toBe("false");
       fireEvent.click(failedOperationalButton);
 
       await waitFor(() => {