diff --git a/codex-cli/tests/agent-cancel-prev-response.test.ts b/codex-cli/tests/agent-cancel-prev-response.test.ts
index 08d37e7b76..9e7c397425 100644
--- a/codex-cli/tests/agent-cancel-prev-response.test.ts
+++ b/codex-cli/tests/agent-cancel-prev-response.test.ts
@@ -132,8 +132,6 @@ describe("cancel clears previous_response_id", () => {
     ] as any);
 
     const bodies = _test.getBodies();
-    // eslint-disable-next-line no-console
-    console.log(JSON.stringify(bodies, null, 2));
     expect(bodies.length).toBeGreaterThanOrEqual(2);
 
     // The *last* invocation belongs to the second run (after cancellation).
diff --git a/codex-rs/tui/src/conversation_history_widget.rs b/codex-rs/tui/src/conversation_history_widget.rs
index 3246fe7263..64fa4f6dd3 100644
--- a/codex-rs/tui/src/conversation_history_widget.rs
+++ b/codex-rs/tui/src/conversation_history_widget.rs
@@ -438,6 +438,8 @@ impl WidgetRef for ConversationHistoryWidget {
             .wrap(wrap_cfg())
             .scroll((offset_into_first as u16, 0));
 
+        // Clear the widget area to avoid visual artifacts from previous frames.
+        Clear.render(area, buf);
         paragraph.render(area, buf);
 
         // Draw scrollbar if necessary.