Viewer:  https://mozilla.github.io/pdf.js/web/viewer.html
Chrome on Windows 10
When the attached PDF file is viewed, some of the fonts display as garbled text. 
[Arial, Courier, Times New Roman]
The file views correctly in Adobe Reader.
[fff.pdf](https://github.com/mozilla/pdf.js/files/4652174/fff.pdf)

const angle = Math.floor(properties.italicAngle * 2 ** 16);
  return (
    "\x00\x03\x00\x00" + 
    string32(angle) + 
    "\x00\x00" + 
    "\x00\x00" + 
    string32(properties.fixedPitch ? 1 : 0) + 
    "\x00\x00\x00\x00" + 
    "\x00\x00\x00\x00" + 
    "\x00\x00\x00\x00" + 
    "\x00\x00\x00\x00"
  ); 
}
function createPostscriptName(name) {
  
  return name.replace(/[^\x21-\x7E]|[[\](){}<>/%]/g, "").slice(0, 63);
}
function createNameTable(name, proto) {
  if (!proto) {