Attach (recommended) or Link to PDF file here:
https://www.co.lucas.oh.us/DocumentCenter/View/44843/WIBApplicationForm

Configuration:
- Web browser and its version: Firefox Nightly 91.0a1 (2021-06-25) (64-bit)
- Operating system and its version: Windows 10.0.19043.1052
- PDF.js version: N/A

Steps to reproduce the problem:
1. enableXFA in Firefox Nightly
2. Open form

What is the expected behavior? (add screenshot)
Text renders (pg 2)
![image](https://user-images.githubusercontent.com/7104454/123516584-d39b9b80-d66a-11eb-956f-980c084b14af.png)

What went wrong? (add screenshot)
Text is missing 
![image](https://user-images.githubusercontent.com/7104454/123516599-e615d500-d66a-11eb-89ef-c49818e9b579.png)



["page-break-after", "breakAfter"],
  ["page-break-before", "breakBefore"],
  ["page-break-inside", "breakInside"],
  ["kerning-mode", value => (value === "none" ? "none" : "normal")],
  [
    "xfa-font-horizontal-scale",
    value =>
      `scaleX(${Math.max(0, Math.min(parseInt(value) / 100)).toFixed(2)})`,
  ],
  [
    "xfa-font-vertical-scale",
    value =>
      `scaleY(${Math.max(0, Math.min(parseInt(value) / 100)).toFixed(2)})`,
  ],
  ["xfa-spacerun", ""],
  ["xfa-tab-stops", ""],
  ["font-size", value => measureToString(getMeasurement(value))],
  ["letter-spacing", value => measureToString(getMeasurement(value))],
  ["line-height", value => measureToString(getMeasurement(value))],
  ["margin", value => measureToString(getMeasurement(value))],
  ["margin-bottom", value => measureToString(getMeasurement(value))],
  ["margin-left", value => measureToString(getMeasurement(value))],
  ["margin-right", value => measureToString(getMeasurement(value))],
  ["margin-top", value => measureToString(getMeasurement(value))],
  ["text-indent", value => measureToString(getMeasurement(value))],
  ["font-family", value => value],
]);
const spacesRegExp = /\s+/g;
const crlfRegExp = /[\r\n]+/g;
function mapStyle(styleStr, fontFinder) {