diff --git a/internal/app/browser_actions_native_test.go b/internal/app/browser_actions_native_test.go
index b2ef482..6148c80 100644
--- a/internal/app/browser_actions_native_test.go
+++ b/internal/app/browser_actions_native_test.go
@@ -147,34 +147,56 @@ func TestNativeBrowserActionOwnership(t *testing.T) {
 			t.Fatalf("clickable discovery for %s: %v", name, found)
 		}
 	}
+	worker, err := review.NewWorker(adapter, 2*time.Second)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := worker.Start(ctx); err != nil {
+		t.Fatal(err)
+	}
+	defer worker.Stop(context.Background())
+	worker.SyncFocus(focus)
+	await_result := func() review.Result {
+		t.Helper()
+		select {
+		case result := <-worker.Results():
+			if result.Err != nil || result.CaretErr != nil {
+				t.Fatalf("document command failed: %+v", result)
+			}
+			return result
+		case <-ctx.Done():
+			t.Fatal(ctx.Err())
+			return review.Result{}
+		}
+	}
+	move_caret := func(command review.DocumentCaretCommand) review.Result {
+		t.Helper()
+		if err := worker.MoveDocumentCaret(command); err != nil {
+			t.Fatal(err)
+		}
+		return await_result()
+	}
+	previousContent := "Initial mode content"
 	for _, mode := range []string{"Basic", "Advanced"} {
-		// Reacquire references after each iframe replacement. Enter's target
-		// still comes from the text leaf, with native focus on the start heading.
-		tree, err = adapter.CaptureDocument(ctx, focus)
-		if err != nil {
-			t.Fatal(err)
-		}
-		root, _ = tree.Root()
-		document, err = tree.Document(ctx, root)
-		if err != nil {
-			t.Fatal(err)
-		}
-		var label atspi.ObjectID
-		for _, node := range document.Nodes {
-			if node.Snapshot.Role == "static" && node.Snapshot.Name == strings.ToUpper(mode) {
-				label = node.Reference.ID()
+		// Use the reader's command path so asynchronous replacement events
+		// exercise its bounded recapture and cursor recovery.
+		move_caret(review.CaretDocumentStart)
+		reached := false
+		for step := 0; step < 16; step++ {
+			move := move_caret(review.CaretNextLine)
+			if strings.TrimSpace(move.DocumentCaretText) == strings.ToUpper(mode) {
+				reached = true
+				break
 			}
 		}
-		cursor, _ = review.NewDocumentCursor(tree)
-		if _, err := cursor.SyncFocus(ctx, label); err != nil {
+		if !reached {
+			t.Fatalf("browse caret could not reach %s", mode)
+		}
+		if err := worker.ActivateDocumentCaret(); err != nil {
 			t.Fatal(err)
 		}
-		target, err := cursor.ActivationTarget()
-		if err != nil {
-			t.Fatal(err)
-		}
-		if err := adapter.ActivateDocumentObject(ctx, target, focus); err != nil {
-			t.Fatal(err)
+		if result := await_result(); !result.DocumentActivate {
+			t.Fatalf("missing activation result: %+v", result)
 		}
 		activated := false
 		for !activated {
@@ -197,11 +219,15 @@ func TestNativeBrowserActionOwnership(t *testing.T) {
 			if err != nil {
 				t.Fatal(err)
 			}
-			ready := false
+			ready, obsolete := false, false
 			for _, node := range document.Nodes {
 				ready = ready || node.Snapshot.Name == mode+" mode content"
+				obsolete = obsolete || node.Snapshot.Name == previousContent
 			}
 			if ready {
+				if obsolete {
+					t.Fatalf("replacement retained %q", previousContent)
+				}
 				break
 			}
 			select {
@@ -212,11 +238,8 @@ func TestNativeBrowserActionOwnership(t *testing.T) {
 		}
 		readNewContent := false
 		for step := 0; step < 8; step++ {
-			move, err := cursor.MoveCaret(ctx, adapter, review.CaretNextLine)
-			if err != nil {
-				t.Fatalf("reading after %s activation: %v", mode, err)
-			}
-			if strings.TrimSpace(move.Text) == mode+" mode content" {
+			move := move_caret(review.CaretNextLine)
+			if strings.TrimSpace(move.DocumentCaretText) == mode+" mode content" {
 				readNewContent = true
 				break
 			}
@@ -224,5 +247,6 @@ func TestNativeBrowserActionOwnership(t *testing.T) {
 		if !readNewContent {
 			t.Fatalf("browse caret could not reach %s replacement content", mode)
 		}
+		previousContent = mode + " mode content"
 	}
 }
diff --git a/internal/app/browser_link_sounds_native_test.go b/internal/app/browser_link_sounds_native_test.go
index ff96b18..f3bce45 100644
--- a/internal/app/browser_link_sounds_native_test.go
+++ b/internal/app/browser_link_sounds_native_test.go
@@ -140,6 +140,16 @@ func TestNativeBrowserCaretLinkSounds(t *testing.T) {
 	if !heading {
 		t.Fatal("fixture heading focus missing")
 	}
+	// Focus speech can arrive before asynchronous mode resolution installs
+	// the browse grabs. Wait for X11 to acknowledge them before sending the
+	// first caret command; native Ctrl+Home at the heading can emit no event.
+	for !commands.BrowseNavigationEnabled() {
+		select {
+		case <-time.After(5 * time.Millisecond):
+		case <-ctx.Done():
+			t.Fatal("browse grabs were not installed", ctx.Err())
+		}
+	}
 	check := func(chord, want string, pan *float64) float64 {
 		t.Helper()
 		key(chord)