diff --git a/frontend/src/views/knowledge/KnowledgeBase.vue b/frontend/src/views/knowledge/KnowledgeBase.vue
index 17aaa3914..b6ff33e8c 100644
--- a/frontend/src/views/knowledge/KnowledgeBase.vue
+++ b/frontend/src/views/knowledge/KnowledgeBase.vue
@@ -1922,6 +1922,7 @@ const handleBatchTag = () => {
 };
 
 const onBatchTagConfirm = async (tagIds: string[]) => {
+  if (batchTagging.value || selectedIds.value.size === 0) return;
   const ids = Array.from(selectedIds.value);
   const updateMap: Record<string, string[]> = {};
   for (const id of ids) {
@@ -1931,8 +1932,10 @@ const onBatchTagConfirm = async (tagIds: string[]) => {
   try {
     await updateKnowledgeTagBatch({ updates: updateMap });
     MessagePlugin.success(t('knowledgeBase.batchTagSuccess', { count: ids.length }));
+    batchTagDialogVisible.value = false;
     clearSelection();
     batchMode.value = false;
+    resetPage();
     loadKnowledgeFiles(kbId.value);
     loadTags(kbId.value, true);
   } catch (e: any) {
@@ -2427,6 +2430,7 @@ async function createNewSession(value: string): Promise<void> {
   <BatchTagDialog :visible="batchTagDialogVisible"
     :count="selectedIds.size" :kb-id="kbId" :tag-list="tagList"
     :pre-selected-tag-ids="batchTagPreSelectedIds" :can-manage="canEdit"
+    :confirm-loading="batchTagging"
     @update:visible="batchTagDialogVisible = $event" @confirm="onBatchTagConfirm"
     @tag-created="loadTags(kbId, true)" @open-manage="openTagManageFromBatchDialog" />
 
diff --git a/frontend/src/views/knowledge/components/BatchTagDialog.test.ts b/frontend/src/views/knowledge/components/BatchTagDialog.test.ts
new file mode 100644
index 000000000..2cecdf201
--- /dev/null
+++ b/frontend/src/views/knowledge/components/BatchTagDialog.test.ts
@@ -0,0 +1,42 @@
+import assert from 'node:assert/strict'
+import test from 'node:test'
+import { readFileSync } from 'node:fs'
+
+const component = readFileSync(new URL('./BatchTagDialog.vue', import.meta.url), 'utf8')
+const zhCN = readFileSync(new URL('../../../i18n/locales/zh-CN.ts', import.meta.url), 'utf8')
+const enUS = readFileSync(new URL('../../../i18n/locales/en-US.ts', import.meta.url), 'utf8')
+const koKR = readFileSync(new URL('../../../i18n/locales/ko-KR.ts', import.meta.url), 'utf8')
+const ruRU = readFileSync(new URL('../../../i18n/locales/ru-RU.ts', import.meta.url), 'utf8')
+
+test('uses a compact flat dialog with selected and available sections', () => {
+  assert.match(component, /dialog-class-name="batch-tag-dialog"/)
+  assert.match(component, /width="420px"/)
+  assert.match(component, /<template #header>/)
+  assert.match(component, /class="batch-tag-heading-icon"/)
+  assert.match(component, /name="discount"/)
+  assert.match(component, /class="setting-drawer__section"/)
+  assert.match(component, /class="setting-drawer__section-title"/)
+  assert.match(component, /batchTagSelectedSection/)
+  assert.match(component, /batchTagAvailableSection/)
+  assert.match(component, /preSelectedTagIds/)
+  assert.match(component, /confirmLoading/)
+  assert.match(component, /canManage/)
+  assert.match(component, /tagManageLink/)
+  assert.match(component, /open-manage/)
+  assert.match(component, /selectedTagsList/)
+  assert.match(component, /availableTagsList/)
+  assert.match(component, /class="batch-tag-chip"/)
+  assert.match(component, /class="batch-tag-create-row"/)
+  assert.match(component, /class="batch-tag-footer"/)
+  assert.match(component, /function handleConfirm\(\) {\s*if \(props\.confirmLoading\) return;\s*emit\('confirm', Array.from\(selectedSet\.value\)\);\s*}/)
+})
+
+test('defines batch tag dialog strings in every supported locale', () => {
+  for (const locale of [zhCN, enUS, koKR, ruRU]) {
+    assert.match(locale, /batchTagDialogHeading:/)
+    assert.match(locale, /batchTagSelectedSection:/)
+    assert.match(locale, /batchTagAvailableSection:/)
+    assert.match(locale, /batchTagSuccess:/)
+    assert.match(locale, /batchTagFailed:/)
+  }
+})
diff --git a/frontend/src/views/knowledge/components/BatchTagDialog.vue b/frontend/src/views/knowledge/components/BatchTagDialog.vue
index 475da1fb4..dde15cb2d 100644
--- a/frontend/src/views/knowledge/components/BatchTagDialog.vue
+++ b/frontend/src/views/knowledge/components/BatchTagDialog.vue
@@ -75,10 +75,10 @@
         {{ $t('knowledgeBase.tagSelectedCount', { count: selectedSet.size }) }}
       </span>
       <div class="batch-tag-footer-right">
-        <t-button variant="outline" size="small" @click="handleClose">
+        <t-button variant="outline" size="small" :disabled="confirmLoading" @click="handleClose">
           {{ $t('common.cancel') }}
         </t-button>
-        <t-button theme="primary" size="small" :loading="saving" @click="handleConfirm">
+        <t-button theme="primary" size="small" :loading="confirmLoading" @click="handleConfirm">
           {{ $t('common.confirm') }}
         </t-button>
       </div>
@@ -106,6 +106,7 @@ const props = defineProps<{
   tagList: Tag[];
   preSelectedTagIds?: string[];
   canManage?: boolean;
+  confirmLoading?: boolean;
 }>();
 
 const emit = defineEmits<{
@@ -120,7 +121,6 @@ const { t } = useI18n();
 const searchQuery = ref('');
 const selectedSet = ref<Set<string>>(new Set());
 const creatingTag = ref(false);
-const saving = ref(false);
 const newTagName = ref('');
 
 watch(
@@ -213,14 +213,9 @@ async function handleAddNewTag() {
   }
 }
 
-async function handleConfirm() {
-  saving.value = true;
-  try {
-    emit('confirm', Array.from(selectedSet.value));
-    emit('update:visible', false);
-  } finally {
-    saving.value = false;
-  }
+function handleConfirm() {
+  if (props.confirmLoading) return;
+  emit('confirm', Array.from(selectedSet.value));
 }
 
 function handleClose() {
diff --git a/frontend/src/views/knowledge/components/DocumentBatchBar.vue b/frontend/src/views/knowledge/components/DocumentBatchBar.vue
index e1037c389..e68afe968 100644
--- a/frontend/src/views/knowledge/components/DocumentBatchBar.vue
+++ b/frontend/src/views/knowledge/components/DocumentBatchBar.vue
@@ -118,7 +118,9 @@ const { t } = useI18n();
 .batch-bar-actions {
   flex-shrink: 0;
   display: flex;
+  flex-wrap: wrap;
   align-items: center;
+  justify-content: flex-end;
   gap: 8px;
 }