diff --git a/src/components/image-editor/ImageCanvasEditorModel.test.ts b/src/components/image-editor/ImageCanvasEditorModel.test.ts
index 015fef6cb..259731a6f 100644
--- a/src/components/image-editor/ImageCanvasEditorModel.test.ts
+++ b/src/components/image-editor/ImageCanvasEditorModel.test.ts
@@ -1398,6 +1398,49 @@ describe('ImageCanvasEditorModel', () => {
     });
   });
 
+  it('does not hydrate a preview video when either task id is missing', () => {
+    const frames = [
+      { imageSrc: '/generated/sequence/frame-1.png', width: 480, height: 480 },
+      { imageSrc: '/generated/sequence/frame-2.png', width: 480, height: 480 },
+    ];
+
+    for (const [animationTaskId, previewTaskId] of [
+      [undefined, 'animation-task-1'],
+      ['animation-task-1', undefined],
+      [undefined, undefined],
+    ] as const) {
+      const sequenceResource = {
+        imageSrc: frames[0]!.imageSrc,
+        assetKind: 'character-animation' as const,
+        imageSequenceFrames: frames,
+        imageSequenceDurationMs: 4_000,
+        ...(animationTaskId ? { taskId: animationTaskId } : {}),
+        sourceResourceId: 'resource-preview-video',
+      };
+      const previewResource = {
+        imageSrc: '/generated/video/preview.mp4',
+        objectKey: 'generated/video/preview.mp4',
+        assetKind: 'video' as const,
+        ...(previewTaskId ? { taskId: previewTaskId } : {}),
+      };
+
+      const resources: Parameters<typeof hydrateLayer>[1] = new Map();
+      resources.set('resource-sequence', sequenceResource);
+      resources.set('resource-preview-video', previewResource);
+      const hydrated = hydrateLayer(
+        {
+          layerId: 'layer-sequence',
+          resourceId: 'resource-sequence',
+          title: '角色动作',
+          sourceType: 'generated',
+        },
+        resources,
+      );
+
+      expect(hydrated?.previewVideoPath).toBeNull();
+    }
+  });
+
   it('does not hydrate an older action reference as a generated preview video', () => {
     const frames = [
       { imageSrc: '/generated/sequence/frame-1.png', width: 480, height: 480 },
diff --git a/src/components/image-editor/ImageCanvasEditorModel.ts b/src/components/image-editor/ImageCanvasEditorModel.ts
index a5813b635..1bc8412df 100644
--- a/src/components/image-editor/ImageCanvasEditorModel.ts
+++ b/src/components/image-editor/ImageCanvasEditorModel.ts
@@ -1450,8 +1450,8 @@ export function hydrateLayer(
         const animationTaskId = stringOrNull(resource?.taskId);
         const previewTaskId = stringOrNull(previewResource.taskId);
         if (
-          animationTaskId &&
-          previewTaskId &&
+          !animationTaskId ||
+          !previewTaskId ||
           animationTaskId !== previewTaskId
         ) {
           return undefined;