diff --git a/src/modules/unified-orders/pages/UnifiedOrdersView.test.ts b/src/modules/unified-orders/pages/UnifiedOrdersView.test.ts
index c6c09e2b..f4317f72 100644
--- a/src/modules/unified-orders/pages/UnifiedOrdersView.test.ts
+++ b/src/modules/unified-orders/pages/UnifiedOrdersView.test.ts
@@ -367,12 +367,11 @@ describe('UnifiedOrdersView contract', () => {
     expect(source).toContain("updateMeasurementSectionMode('actual', $event)")
     expect(source).not.toContain("updateMeasurementSectionMode('outer', $event)")
     expect(source.match(/@change="selectAndSaveOuterMeasurementMode\(\$event\)"/g)).toHaveLength(2)
-    expect(source).toContain('@visible-change="handleOuterModeDropdownVisibleChange($event)"')
+    expect(source).not.toContain('@visible-change="handleOuterModeDropdownVisibleChange($event)"')
     expect(source.match(/:disabled="Boolean\(measurementStrategySavingId\) \|\| !can\('platform:firstleg:inbound:measure:edit'\)"/g)).toHaveLength(2)
     expect(source).toContain('const previousMode = measurementSectionModes.outer')
     expect(source).toContain('if (!saved) measurementSectionModes.outer = previousMode')
-    expect(source).toContain('const selectedSameMode = outerModeAtDropdownOpen.value === measurementSectionModes.outer')
-    expect(source).toContain('await nextTick()')
+    expect(source).not.toContain('handleOuterModeDropdownVisibleChange')
     expect(source).toContain('const saved = await updateMeasurementCalculationMode(null, mode, ruleId)')
     expect(source).toContain('calculatedMeasurementRow(row, measurementSectionModes.customer, true)')
     expect(source).toContain('calculatedMeasurementRow(source, measurementSectionModes.outer)')
diff --git a/src/modules/unified-orders/pages/UnifiedOrdersView.vue b/src/modules/unified-orders/pages/UnifiedOrdersView.vue
index 1c07f275..fbcb3e86 100644
--- a/src/modules/unified-orders/pages/UnifiedOrdersView.vue
+++ b/src/modules/unified-orders/pages/UnifiedOrdersView.vue
@@ -188,7 +188,6 @@ type MeasurementCalculationMode = 'ACTUAL' | 'ADD' | 'MULTIPLY'
 const measurementSectionModes = reactive<Record<MeasurementSection, MeasurementCalculationMode>>({
   customer: 'ACTUAL', outer: 'ACTUAL', actual: 'ACTUAL',
 })
-const outerModeAtDropdownOpen = ref<MeasurementCalculationMode | null>(null)
 const cargoImagePreviewUrls = new Set<string>()
 const measurementDialogOpen = ref(false)
 const openWarehouseSuggestionOnMeasurementLoad = ref(false)
@@ -463,21 +462,6 @@ async function selectAndSaveOuterMeasurementMode(mode: MeasurementCalculationMod
   if (!saved) measurementSectionModes.outer = previousMode
 }
 
-async function handleOuterModeDropdownVisibleChange(visible: boolean) {
-  if (visible) {
-    outerModeAtDropdownOpen.value = measurementSectionModes.outer
-    return
-  }
-  // Element Plus may emit dropdown-close before change. Wait until the change handler has
-  // updated the mode/saving state, otherwise one click can submit both the old and new mode.
-  await nextTick()
-  const selectedSameMode = outerModeAtDropdownOpen.value === measurementSectionModes.outer
-  outerModeAtDropdownOpen.value = null
-  if (selectedSameMode && !measurementStrategySavingId.value) {
-    void selectAndSaveOuterMeasurementMode(measurementSectionModes.outer)
-  }
-}
-
 async function waitForSavedMeasurementVersion(tenantId: string, inboundId: string, savedVersion: number) {
   for (let attempt = 0; attempt < 6; attempt += 1) {
     try {
@@ -2143,7 +2127,7 @@ onBeforeUnmount(() => {
               </section>
               <div class="measurement-rule-selector">
                 <span class="measurement-rule-selector__label">箱规计算规则选择</span>
-                <el-select class="measurement-rule-selector__control" :model-value="measurementSectionModes.outer" aria-label="外箱规数据计算方式" :loading="Boolean(measurementStrategySavingId)" :disabled="Boolean(measurementStrategySavingId) || !can('platform:firstleg:inbound:measure:edit')" @change="selectAndSaveOuterMeasurementMode($event)" @visible-change="handleOuterModeDropdownVisibleChange($event)">
+                <el-select class="measurement-rule-selector__control" :model-value="measurementSectionModes.outer" aria-label="外箱规数据计算方式" :loading="Boolean(measurementStrategySavingId)" :disabled="Boolean(measurementStrategySavingId) || !can('platform:firstleg:inbound:measure:edit')" @change="selectAndSaveOuterMeasurementMode($event)">
                   <el-option label="实测原尺寸（不调整）" value="ACTUAL" />
                   <el-option label="箱规尺寸" value="ADD" />
                   <el-option label="箱规系数" value="MULTIPLY" :disabled="multiplyModeDisabled" />