diff --git a/src/components/helpcenter/HelpCenterMenuContent.vue b/src/components/helpcenter/HelpCenterMenuContent.vue
index deb14854c2..93d5398b75 100644
--- a/src/components/helpcenter/HelpCenterMenuContent.vue
+++ b/src/components/helpcenter/HelpCenterMenuContent.vue
@@ -482,7 +482,7 @@ const calculateSubmenuPosition = (button: HTMLElement): CSSProperties => {
 }
 
 const formatReleaseDate = (dateString?: string): string => {
-  if (!dateString) return 'date'
+  if (!dateString) return t('helpCenter.missingDate')
   const diffMs = Math.abs(Date.now() - new Date(dateString).getTime())
   return formatRelativeTime(t, diffMs)
 }
diff --git a/src/locales/en/main.json b/src/locales/en/main.json
index 6abb6ce8d9..e9eb837193 100644
--- a/src/locales/en/main.json
+++ b/src/locales/en/main.json
@@ -1020,7 +1020,8 @@
     "updateComfyUIStartedDetail": "ComfyUI update has been queued. Please wait...",
     "updateComfyUISuccess": "Update Complete",
     "updateComfyUISuccessDetail": "ComfyUI has been updated. Rebooting...",
-    "updateComfyUIFailed": "Failed to update ComfyUI. Please try again."
+    "updateComfyUIFailed": "Failed to update ComfyUI. Please try again.",
+    "missingDate": "Date unavailable"
   },
   "releaseToast": {
     "newVersionAvailable": "New update is out!",
diff --git a/src/platform/dev/backfillServerDeprecations.test.ts b/src/platform/dev/backfillServerDeprecations.test.ts
index 69c9e490e0..139fbdc425 100644
--- a/src/platform/dev/backfillServerDeprecations.test.ts
+++ b/src/platform/dev/backfillServerDeprecations.test.ts
@@ -136,6 +136,22 @@ describe('backfillServerDeprecations', () => {
     expect(api.getRawLogs).toHaveBeenCalledTimes(1)
   })
 
+  it('dedupes concurrent callers to a single fetch', async () => {
+    const api = mockState.api
+    api.getRawLogs.mockResolvedValue({ entries: [] })
+
+    const { backfillServerDeprecations } =
+      await import('@/platform/dev/backfillServerDeprecations')
+
+    await Promise.all([
+      backfillServerDeprecations(),
+      backfillServerDeprecations(),
+      backfillServerDeprecations()
+    ])
+
+    expect(api.getRawLogs).toHaveBeenCalledTimes(1)
+  })
+
   it('retries on a subsequent call after a failure', async () => {
     const api = mockState.api
     api.getRawLogs
diff --git a/src/platform/dev/backfillServerDeprecations.ts b/src/platform/dev/backfillServerDeprecations.ts
index ae2e66d619..899e1d08be 100644
--- a/src/platform/dev/backfillServerDeprecations.ts
+++ b/src/platform/dev/backfillServerDeprecations.ts
@@ -5,38 +5,50 @@ const PREFIX = '[DEPRECATION WARNING]'
 const LEGACY_API_PATH_REGEX = /:\s*(\S+?)\.\s+This is likely caused/
 
 let backfilled = false
+let backfillInProgress: Promise<void> | null = null
 
 /**
  * Seed the store from the backend's raw log buffer.
  */
 export async function backfillServerDeprecations(): Promise<void> {
   if (backfilled) return
-  try {
-    const logs = await api.getRawLogs()
-    const store = useDeprecationWarningsStore()
-    for (const entry of logs.entries) {
-      if (!entry.m.includes(PREFIX)) continue
-      const path = LEGACY_API_PATH_REGEX.exec(entry.m)?.[1]
-      if (path) {
-        store.report({
-          message: `Legacy API import: ${path}`,
-          suggestion:
-            'Update the extension that imports this file, or ask its author to migrate.',
-          source: 'server'
-        })
-      } else {
-        console.warn(
-          'Server deprecation log did not match legacy-API template; falling back to raw line. Update LEGACY_API_PATH_REGEX:',
-          entry.m
-        )
-        store.report({
-          message: entry.m.trim(),
-          source: 'server'
-        })
+  if (backfillInProgress) return backfillInProgress
+
+  backfillInProgress = (async () => {
+    try {
+      const logs = await api.getRawLogs()
+      const store = useDeprecationWarningsStore()
+      for (const entry of logs.entries) {
+        if (!entry.m.includes(PREFIX)) continue
+        const path = LEGACY_API_PATH_REGEX.exec(entry.m)?.[1]
+        if (path) {
+          store.report({
+            message: `Legacy API import: ${path}`,
+            suggestion:
+              'Update the extension that imports this file, or ask its author to migrate.',
+            source: 'server'
+          })
+        } else {
+          console.warn(
+            'Server deprecation log did not match legacy-API template; falling back to raw line. Update LEGACY_API_PATH_REGEX:',
+            entry.m
+          )
+          store.report({
+            message: entry.m.trim(),
+            source: 'server'
+          })
+        }
       }
+      backfilled = true
+    } catch (err) {
+      console.error(
+        'Failed to fetch initial server logs for deprecations:',
+        err
+      )
+    } finally {
+      backfillInProgress = null
     }
-    backfilled = true
-  } catch (err) {
-    console.error('Failed to fetch initial server logs for deprecations:', err)
-  }
+  })()
+
+  return backfillInProgress
 }