Attach (recommended) or Link to PDF file here:
https://www.placementsmondiauxsunlife.com/content/dam/sunlife/regional/canada/documents/slgi/4839-I-F.pdf

Configuration:

- Web browser and its version: 91.0a1 (2021-07-03) (64-bit)
- Operating system and its version: Windows 10

Steps to reproduce the problem:
1. enableXfa = true
2. Open form

What is the expected behavior? (add screenshot)

![image](https://user-images.githubusercontent.com/7104454/124389449-1ede2b80-dcb5-11eb-98ba-01e1f3d6c6f5.png)


What went wrong? (add screenshot)

![image](https://user-images.githubusercontent.com/7104454/124389460-2c93b100-dcb5-11eb-9768-98ddd2c8f1e7.png)

}
          if (node.trailer) {
            trailer = this[$searchNode](node.trailer, node[$getParent]());
            trailer = trailer ? trailer[0] : null;
          }
          if (node.targetType === "pageArea") {
            targetPageArea = node[$extra].target;
            i = Infinity;
          } else if (!node[$extra].target) {
            
            i = node[$extra].index;
          } else {
            targetPageArea = node[$extra].target;
            startIndex = node[$extra].index + 1;
            i = Infinity;
          }
          continue;
        }
        if (this[$extra].overflowNode) {
          const node = this[$extra].overflowNode;
          this[$extra].overflowNode = null;
          const overflowExtra = node[$getExtra]();
          const target = overflowExtra.target;
          overflowExtra.addLeader = overflowExtra.leader !== null;
          overflowExtra.addTrailer = overflowExtra.trailer !== null;
          flush(i);
          i = Infinity;
          if (target instanceof PageArea) {
            
            targetPageArea = target;