diff --git a/frontend/src/components/workspace/messages/message-list.tsx b/frontend/src/components/workspace/messages/message-list.tsx
index ee38d08..a615515 100644
--- a/frontend/src/components/workspace/messages/message-list.tsx
+++ b/frontend/src/components/workspace/messages/message-list.tsx
@@ -154,16 +154,14 @@ export function MessageList({
                   />,
                 );
               }
-              if (tasks.size > 1) {
-                results.push(
-                  <div
-                    key="subtask-count"
-                    className="text-muted-foreground font-norma pt-2 text-sm"
-                  >
-                    {t.subtasks.executing(tasks.size)}
-                  </div>,
-                );
-              }
+              results.push(
+                <div
+                  key="subtask-count"
+                  className="text-muted-foreground font-norma pt-2 text-sm"
+                >
+                  {t.subtasks.executing(tasks.size)}
+                </div>,
+              );
               const taskIds = message.tool_calls?.map(
                 (toolCall) => toolCall.id,
               );
diff --git a/frontend/src/components/workspace/messages/subtask-card.tsx b/frontend/src/components/workspace/messages/subtask-card.tsx
index 772bc9c..924ffc1 100644
--- a/frontend/src/components/workspace/messages/subtask-card.tsx
+++ b/frontend/src/components/workspace/messages/subtask-card.tsx
@@ -98,7 +98,7 @@ export function SubtaskCard({
                   >
                     {icon}
                     <FlipDisplay
-                      className="pb-1"
+                      className="max-w-[420px] truncate pb-1"
                       uniqueKey={task.latestMessage?.id ?? ""}
                     >
                       {task.status === "in_progress" &&
diff --git a/frontend/src/core/i18n/locales/en-US.ts b/frontend/src/core/i18n/locales/en-US.ts
index 3d87824..5c3cd49 100644
--- a/frontend/src/core/i18n/locales/en-US.ts
+++ b/frontend/src/core/i18n/locales/en-US.ts
@@ -214,7 +214,7 @@ export const enUS: Translations = {
   subtasks: {
     subtask: "Subtask",
     executing: (count: number) =>
-      `Executing ${count} subtask${count === 1 ? "" : "s"} in parallel`,
+      `Executing ${count === 1 ? "" : count + " "}subtask${count === 1 ? "" : "s in parallel"}`,
     in_progress: "Running subtask",
     completed: "Subtask completed",
     failed: "Subtask failed",
diff --git a/frontend/src/core/i18n/locales/zh-CN.ts b/frontend/src/core/i18n/locales/zh-CN.ts
index 6d6db64..fbd2479 100644
--- a/frontend/src/core/i18n/locales/zh-CN.ts
+++ b/frontend/src/core/i18n/locales/zh-CN.ts
@@ -207,7 +207,8 @@ export const zhCN: Translations = {
 
   subtasks: {
     subtask: "子任务",
-    executing: (count: number) => `并行执行 ${count} 个子任务`,
+    executing: (count: number) =>
+      `${count > 1 ? "并行" : ""}执行 ${count} 个子任务`,
     in_progress: "子任务运行中",
     completed: "子任务已完成",
     failed: "子任务失败",