diff --git a/web/hwlab-cloud-web/src/components/workbench/ConversationPanel.vue b/web/hwlab-cloud-web/src/components/workbench/ConversationPanel.vue
index 219fd3a1..35283f3a 100644
--- a/web/hwlab-cloud-web/src/components/workbench/ConversationPanel.vue
+++ b/web/hwlab-cloud-web/src/components/workbench/ConversationPanel.vue
@@ -308,7 +308,7 @@ function terminalMessageDurationMs(message: ChatMessage, timing: ChatMessage["ti
   if (recorded !== null) return recorded;
   const elapsed = elapsedTerminalDurationMs(message, timing);
   if (elapsed !== null && elapsed > 0) return elapsed;
-  return finiteDurationMs(message.durationMs) ?? finiteDurationMs(timing?.durationMs) ?? finiteDurationMs(message.runnerTrace?.durationMs) ?? finiteDurationMs(message.runnerTrace?.timing?.durationMs) ?? elapsed;
+  return null;
 }
 
 function elapsedTerminalDurationMs(message: ChatMessage, timing: ChatMessage["timing"]): number | null {