diff --git a/static/src/components/chat/monitor/MonitorDirector.ts b/static/src/components/chat/monitor/MonitorDirector.ts
index 118f2a1..f0ac7c6 100644
--- a/static/src/components/chat/monitor/MonitorDirector.ts
+++ b/static/src/components/chat/monitor/MonitorDirector.ts
@@ -1384,11 +1384,11 @@ export class MonitorDirector implements MonitorDriver {
     }
   }
 
-  private async ensureMemoryWindowVisible(options: { initialEntries?: string[]; memoryType?: string } = {}) {
-    const { initialEntries = [], memoryType = 'main' } = options;
+  private async ensureMemoryWindowVisible(options: { initialEntries?: string[]; snapshotProvided?: boolean; memoryType?: string } = {}) {
+    const { initialEntries, snapshotProvided = false, memoryType = 'main' } = options;
     const hydrate = async () => {
-      if (initialEntries.length) {
-        this.renderMemoryEntries(initialEntries);
+      if (snapshotProvided) {
+        this.renderMemoryEntries(initialEntries || []);
         return;
       }
       if (!this.getMemoryItems().length) {
@@ -1397,7 +1397,7 @@ export class MonitorDirector implements MonitorDriver {
     };
     if (this.isWindowVisible(this.elements.memoryWindow)) {
       this.showWindow(this.elements.memoryWindow);
-      if (!this.getMemoryItems().length || initialEntries.length) {
+      if (!this.getMemoryItems().length || snapshotProvided) {
         await hydrate();
       }
       return;
@@ -1413,14 +1413,14 @@ export class MonitorDirector implements MonitorDriver {
     return Array.from(this.elements.memoryList.children) as HTMLElement[];
   }
 
-  private extractMemorySnapshotEntries(payload: any, stage: 'before' | 'after' = 'before'): string[] {
+  private extractMemorySnapshotEntries(payload: any, stage: 'before' | 'after' = 'before'): { entries: string[]; provided: boolean } {
     const key = stage === 'after' ? 'monitor_snapshot_after' : 'monitor_snapshot';
     const snapshot = payload?.[key];
     const entries = snapshot?.entries;
     if (Array.isArray(entries)) {
-      return entries.map(entry => String(entry ?? ''));
+      return { entries: entries.map(entry => String(entry ?? '')), provided: true };
     }
-    return [];
+    return { entries: [], provided: !!snapshot };
   }
 
   private getMemoryItemByIndex(index: number): HTMLElement | null {
@@ -2794,10 +2794,10 @@ export class MonitorDirector implements MonitorDriver {
 
     this.sceneHandlers.memoryUpdate = async (payload, runtime) => {
       this.applySceneStatus(runtime, 'memoryUpdate', '正在同步记忆');
-      const initialEntries = this.extractMemorySnapshotEntries(payload, 'before');
+      const { entries: initialEntries, provided: snapshotProvided } = this.extractMemorySnapshotEntries(payload, 'before');
       const memoryType =
         (payload?.arguments?.memory_type || payload?.result?.memory_type || 'main').toString().toLowerCase();
-      await this.ensureMemoryWindowVisible({ initialEntries, memoryType });
+      await this.ensureMemoryWindowVisible({ initialEntries, snapshotProvided, memoryType });
 
       const op = (payload?.arguments?.operation || payload?.result?.operation || 'append').toLowerCase();
       const content = payload?.arguments?.content || payload?.result?.content || '';