Attach (recommended) or Link to PDF file here:
http://help.adobe.com/en_US/livecycle/11.0/SampleForms/941/Form.pdf

- Web browser and its version: Firefox 89.0.1
- Operating system and its version: Windows 10 10.0.19043.1052
- PDF.js version: commit bdfcdd6f8326f22c135edfa29a341ea4c558f3d1
- Is a browser extension: No

Steps to reproduce the problem:
1. Enable XFA support
2. Open form

What is the expected behavior? (add screenshot)
Page 3 (of 4) renders
![image](https://user-images.githubusercontent.com/7104454/122686842-622e9980-d1e1-11eb-92ab-86fe488560f2.png)

What went wrong? (add screenshot)
Only 3 pages total render in pdf.js
warn(
                "save - ignoring annotation data during " +
                  `"${task.name}" task: "${reason}".`
              );
              return null;
            })
        );
      }
      return Promise.all(newRefsPromises);
    });
  }
  loadResources(keys) {
    if (!this.resourcesPromise) {
      
      this.resourcesPromise = this.pdfManager.ensure(this, "resources");
    }
    return this.resourcesPromise.then(() => {
      const objectLoader = new ObjectLoader(this.resources, keys, this.xref);
      return objectLoader.load();
    });
  }
  getOperatorList({
    handler,
    sink,
    task,
    intent,
    renderInteractiveForms,
    annotationStorage,
  }) {
    const contentStreamPromise = this.getContentStream();