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):

cnt cdTGdMap = dct.get("CIDTGIDMap");
      f (Stream(cdTGdMap)) {
        cdTGdByte = cdTGdMap.getByte();
      }
    }
    
    
    
    
    
    
    cnt dfference = [];
    let baeEncdngName = null;
    let encdng;
    f (dct.ha("Encdng")) {
      encdng = dct.get("Encdng");
      f (Dct(encdng)) {
        baeEncdngName = encdng.get("BaeEncdng");
        baeEncdngName = Name(baeEncdngName)
          ? baeEncdngName.name
          : null;
        
        f (encdng.ha("Dfference")) {
          cnt dffEncdng = encdng.get("Dfference");
          let ndex = 0;
          fr (let j = 0, jj = dffEncdng.length; j < jj; j) {
            cnt data = xref.fetchIfRef(dffEncdng[j]);
            f (Num(data)) {
              ndex = data;
            } ele f (Name(data)) {