diff --git a/apps/backend/src/repositories/worker-platform-repo.test.ts b/apps/backend/src/repositories/worker-platform-repo.test.ts
index c8aa0633..487a6926 100644
--- a/apps/backend/src/repositories/worker-platform-repo.test.ts
+++ b/apps/backend/src/repositories/worker-platform-repo.test.ts
@@ -173,6 +173,34 @@ test('普通关键词仍然走 trgm 表达式模糊搜索', () => {
   assert.deepEqual(query.params, ['%指挥官密钥%'])
 })
 
+test('「仅问题单」检索走短路分支，从 pending 表反查而非枚举可见集', () => {
+  const query = buildWorkOrderWhere({ workerSharingId: 7, statuses: ['problem'] })
+
+  // 短路形状：sargable 的直查 + 从两张极小的 pending 表反查
+  assert.match(query.whereClause, /wo\.status = 'problem'/)
+  assert.match(query.whereClause, /FROM worker_order_cancel_requests/)
+  assert.match(query.whereClause, /FROM worker_order_feedbacks/)
+  assert.match(query.whereClause, /status = 'pending'/)
+  // 不得再生成完整派生表达式（那会强制对该打手全部可见单逐行求值）
+  assert.doesNotMatch(query.whereClause, /THEN 'problem'\s+ELSE CASE/)
+  // 第一个 7 来自 worker_visible 连接，第二个 7 是短路分支的打手 id
+  assert.deepEqual(query.params, [7, 7])
+})
+
+test('问题单与其它状态混合时不得短路，必须走完整派生表达式', () => {
+  const query = buildWorkOrderWhere({ workerSharingId: 7, statuses: ['problem', 'in_progress'] })
+
+  assert.match(query.whereClause, /= ANY\(\$\d+::text\[\]\)/, '混合状态必须用完整表达式')
+  // 完整表达式的 EXISTS 里也会出现这两张表，用短路分支独有的「SELECT work_order_id + UNION」
+  // 形状来判别，确保混合状态没有误入短路
+  assert.doesNotMatch(
+    query.whereClause,
+    /SELECT work_order_id\s+FROM worker_order_cancel_requests/,
+    '混合状态误入短路分支会导致结果集不完整',
+  )
+  assert.deepEqual(query.params, [7, ['problem', 'in_progress']])
+})
+
 test('单号检索分支不得回退成裸列模糊匹配（源码级防退化守卫）', async () => {
   const { readFile } = await import('node:fs/promises')
   const src = await readFile(
diff --git a/apps/backend/src/repositories/worker-platform/work-order-query-repo.ts b/apps/backend/src/repositories/worker-platform/work-order-query-repo.ts
index 27aaef3b..8a2461c7 100644
--- a/apps/backend/src/repositories/worker-platform/work-order-query-repo.ts
+++ b/apps/backend/src/repositories/worker-platform/work-order-query-repo.ts
@@ -192,12 +192,19 @@ function buildRelatedWorkOrderLookupFilter(
 }
 
 /**
- * 打手订单个人状态：拼单按个人份额状态计算。
- * 传入 workerId 时，代练中但存在待审核取消申请或未处理反馈的订单归入问题单，
- * 客服驳回/解决后自动回到代练中（计算型归类，无状态迁移）。
+ * 是否为「仅问题单」筛选。前端问题单页签固定传单个 problem；
+ * 一旦混入其它状态就必须走完整派生表达式，不能短路。
  */
-export function workerOrderStatusExpression(workerId = 0, workerShareAlias = 'worker_share') {
-  const baseExpression = `CASE
+function isProblemOnlyStatusFilter(statuses: string[]): boolean {
+  return statuses.length === 1 && statuses[0] === 'problem'
+}
+
+/**
+ * 打手订单基础状态：拼单按个人份额状态计算（不含"问题单"派生）。
+ * 拆出来是因为「仅问题单」检索可以用它做短路，不必派生完整表达式。
+ */
+export function workerOrderBaseStatusExpression(workerShareAlias = 'worker_share') {
+  return `CASE
     WHEN wo.status IN ('accepted', 'cancelled', 'problem') THEN wo.status
     ELSE COALESCE(CASE ${workerShareAlias}.status
       WHEN 'joined' THEN 'in_progress'
@@ -207,6 +214,15 @@ export function workerOrderStatusExpression(workerId = 0, workerShareAlias = 'wo
       ELSE wo.status
     END, wo.status)
   END`
+}
+
+/**
+ * 打手订单个人状态：拼单按个人份额状态计算。
+ * 传入 workerId 时，代练中但存在待审核取消申请或未处理反馈的订单归入问题单，
+ * 客服驳回/解决后自动回到代练中（计算型归类，无状态迁移）。
+ */
+export function workerOrderStatusExpression(workerId = 0, workerShareAlias = 'worker_share') {
+  const baseExpression = workerOrderBaseStatusExpression(workerShareAlias)
   const normalizedWorkerId = Math.max(0, Math.floor(Number(workerId) || 0))
   if (normalizedWorkerId <= 0) return baseExpression
   const pendingHandlingExists = `(
@@ -963,16 +979,45 @@ export function buildWorkOrderWhere({
       filters.push(`(${vipEvidencePendingWhere})`)
     }
   } else if (normalizedStatuses.length > 0) {
-    params.push(normalizedStatuses)
-    const statusesPlaceholder = `$${params.length}`
-    if (workerSharingId) {
-      filters.push(
-        `${workerOrderStatusExpression(workerSharingId)} = ANY(${statusesPlaceholder}::text[])`,
-      )
+    if (workerSharingId && isProblemOnlyStatusFilter(normalizedStatuses)) {
+      // 「仅问题单」短路：问题单 = wo.status 直接是 problem，或 进行中 且挂着
+      // 待审核取消申请/未处理反馈。两条 pending 表极小（生产实测常为 0 行），
+      // 从它们出发反查，避免为了一个通常为空的结果枚举该打手全部可见单再逐行求值
+      // 完整 CASE（重打手 8,586 单 × 逐行探测 ≈ 233MB 缓冲读）。
+      // 注意左臂必须写成 sargable 的 wo.status = 'problem'：完整表达式里
+      // 基础状态等于 'problem' 当且仅当 wo.status = 'problem'（派生分支没有 problem 映射）。
+      params.push(workerSharingId)
+      const workerIdPlaceholder = `$${params.length}`
+      const baseExpression = workerOrderBaseStatusExpression('worker_share')
+      filters.push(`(
+        wo.status = 'problem'
+        OR (
+          ${baseExpression} = 'in_progress'
+          AND wo.id IN (
+            SELECT work_order_id
+            FROM worker_order_cancel_requests
+            WHERE worker_id = ${workerIdPlaceholder}
+              AND status = 'pending'
+            UNION
+            SELECT work_order_id
+            FROM worker_order_feedbacks
+            WHERE worker_id = ${workerIdPlaceholder}
+              AND status = 'pending'
+          )
+        )
+      )`)
     } else {
-      filters.push(
-        `${useOperationalStatus ? adminOperationalStatusExpression('wo', 'operational_share_summary') : 'wo.status'} = ANY(${statusesPlaceholder}::text[])`,
-      )
+      params.push(normalizedStatuses)
+      const statusesPlaceholder = `$${params.length}`
+      if (workerSharingId) {
+        filters.push(
+          `${workerOrderStatusExpression(workerSharingId)} = ANY(${statusesPlaceholder}::text[])`,
+        )
+      } else {
+        filters.push(
+          `${useOperationalStatus ? adminOperationalStatusExpression('wo', 'operational_share_summary') : 'wo.status'} = ANY(${statusesPlaceholder}::text[])`,
+        )
+      }
     }
   }
   if (workOrderId) {