Attach (recommended) or Link to PDF file here:
[example.pdf](https://github.com/mozilla/pdf.js/files/6916129/example.pdf)

Configuration:
- Web browser and its version: Chrome, Firefox
- Operating system and its version: all
- PDF.js version: various versions, including 2.11.54
- Is a browser extension: no

Screenshot with visible textLayer:
![Screenshot from 2021-08-02 13-05-03](https://user-images.githubusercontent.com/6362989/127844878-f85e291f-2060-4028-be09-7835f32ccfaa.png)

Which means some letters at the beginning/end of text selection are missing when copying text.

}
        if (
          platformId === 0 &&
          (encodingId ===  0 ||
            encodingId ===  1 ||
            encodingId ===  3)
        ) {
          useTable = true;
          
          
        } else if (platformId === 1 && encodingId === 0) {
          useTable = true;
          
          
        } else if (
          platformId === 3 &&
          encodingId === 1 &&
          (hasEncoding || !potentialTable)
        ) {
          useTable = true;
          if (!isSymbolicFont) {
            canBreak = true;
          }
        } else if (isSymbolicFont && platformId === 3 && encodingId === 0) {
          useTable = true;
          let correctlySorted = true;
          if (i < numTables - 1) {
            const nextBytes = file.peekBytes(2),
              nextPlatformId = int16(nextBytes[0], nextBytes[1]);
            if (nextPlatformId < platformId) {