diff --git a/packages/prime/src/prime_lab_app/eval_screen.py b/packages/prime/src/prime_lab_app/eval_screen.py
index b43aa7c94..cea5c3477 100644
--- a/packages/prime/src/prime_lab_app/eval_screen.py
+++ b/packages/prime/src/prime_lab_app/eval_screen.py
@@ -5,9 +5,8 @@
 import re
 from collections.abc import Callable, Sequence
 from pathlib import Path
-from typing import Any, Literal
+from typing import Any, Literal, cast
 
-from rich.markup import escape
 from rich.text import Text
 from textual import events, on, work
 from textual.app import ComposeResult
@@ -1291,7 +1290,8 @@ def _make_section(self, section: HistorySectionData) -> Collapsible:
         )
         return Collapsible(
             *children,
-            title=escape(section.title),
+            # Textual accepts Rich Text titles, but annotates this parameter as str.
+            title=cast(str, Text(section.title)),
             collapsed=collapsed,
             classes=section.classes,
         )
diff --git a/packages/prime/tests/test_lab_view.py b/packages/prime/tests/test_lab_view.py
index 7dcb98ac7..e0dd9ef04 100644
--- a/packages/prime/tests/test_lab_view.py
+++ b/packages/prime/tests/test_lab_view.py
@@ -147,7 +147,7 @@
     WorkspaceScreen,
 )
 from prime_lab_app.eval_markdown import MathMarkdown, make_math_parser
-from prime_lab_app.eval_records import LazyRunResults, LocalEvalRun
+from prime_lab_app.eval_records import HistorySectionData, LazyRunResults, LocalEvalRun
 from prime_lab_app.eval_render import compute_run_overview_stats, history_groups
 from prime_lab_app.eval_screen import (
     HostedEvalSamplesScreen,
@@ -1610,6 +1610,17 @@ def test_rollout_viewer_escapes_xml_in_markdown_body() -> None:
     ]
 
 
+def test_rollout_viewer_treats_section_titles_as_literal_text() -> None:
+    title = "tool 2  bash  ... [SUPABASE_URL=http://kong:8000 SUPABASE_ANO..."
+    viewer = RolloutViewer([])
+
+    section = viewer._make_section(
+        HistorySectionData(title=title, body="output", column="completion")
+    )
+
+    assert str(section.title) == title
+
+
 def test_rollout_tool_calls_use_non_error_palette() -> None:
     assert TOOL_CALL in RolloutViewer.DEFAULT_CSS
     tool_call_block = RolloutViewer.DEFAULT_CSS.split(".tool-call-section", 1)[1].split("}", 1)[0]