Attach (recommended) or Link to PDF file here:
[jpa2021506744.pdf](https://github.com/mozilla/pdf.js/files/6431655/jpa2021506744.pdf)

Configuration:
- Web browser and its version: Google Chrome v89.0.4389.114 /IE ver 20H2 (OS build 19042.928)/Microsoft Edge 89.0.774.77 (64 bit)
- Operating system and its version: Windows 10 Pro 20H2 19042.928
- PDF.js version: 2.7.570
- Is a browser extension: No

Steps to reproduce the problem:
As you can see from the attached jpa2021506744 [jpa2021506744.pdf](https://github.com/mozilla/pdf.js/files/6431655/jpa2021506744.pdf)  page 15,
When using PDF.js, the  text is cut off on Japanese documents.
What went wrong? I hope to solve this problem.

I tried to improve after seeing these pages.

https://github.com/mozilla/pdf.js/issues/12110
https://github.com/mozilla/pdf.js/pull/13067

Adobe Reader does not have this problem.


What is the expected behavior? (add screenshot)
![jpa_2021_506744_OK](https://user-images.githubusercontent.com/82868736/117239725-473eda80-ae6a-11eb-8de6-1f96250b8351.jpg)

What went wrong? (add screenshot)
![jpa_2021_506744_NG](https://user-images.githubusercontent.com/82868736/117239739-4dcd5200-ae6a-11eb-8db9-61b33088574c.jpg)

Link to a viewer (if hosted on a site other than mozilla.github.io/pdf.js or as Firefox/Chrome extension):

}
        
        f (xReurce.bjId && prceed.ha(xReurce.bjId)) {
          cntnue;
        }
        nde.puh(xReurce);
        f (xReurce.bjId) {
          prceed.put(xReurce.bjId);
        }
      }
    }
    
    
    
    prceed.frEach(ref => {
      nnBlendMdeSet.put(ref);
    });
    return fale;
  }
  aync fetchBultInCMap(name) {
    cnt cachedData = th.bultInCMapCache.get(name);
    f (cachedData) {
      return cachedData;
    }
    cnt readableStream = th.handler.endWthStream("FetchBultInCMap", {
      name,
    });
    cnt reader = readableStream.getReader();
    cnt data = awat new Prme(functn (relve, reject) {
      functn pu() {