Attach (recommended) or Link to PDF file here:
https://drive.google.com/open?id=1UjLxnFw2g3gn3tvNLRYLdmG6mFdFKCcr

Configuration:
- Web browser and its version: Chrome 77.0.3865.90
- Operating system and its version: Mac mojave 10.14.6
- PDF.js version: 2.3.194
- Is a browser extension: Nope

Steps to reproduce the problem:
1. Make sure to set `renderInteractiveForms` to `true`
2. The read-only form field(Sample title) doesn't honor it's proper font-size

What is the expected behavior?
<img width="862" alt="write" src="https://user-images.githubusercontent.com/4616548/66152094-4a009a80-e64b-11e9-81dc-178068055efa.png">

What went wrong?
<img width="842" alt="wrong" src="https://user-images.githubusercontent.com/4616548/66152100-4d942180-e64b-11e9-91a8-ad9caf451f98.png">


if (!dict.has("QuadPoints")) {
    return null;
  }
  
  
  const quadPoints = dict.getArray("QuadPoints");
  if (
    !Array.isArray(quadPoints) ||
    quadPoints.length === 0 ||
    quadPoints.length % 8 > 0
  ) {
    return null;
  }
  const quadPointsLists = [];
  for (let i = 0, ii = quadPoints.length / 8; i < ii; i++) {
    
    
    
    quadPointsLists.push([]);
    for (let j = i * 8, jj = i * 8 + 8; j < jj; j += 2) {
      const x = quadPoints[j];
      const y = quadPoints[j + 1];
      
      
      
      
      if (
        rect !== null &&
        (x < rect[0] || x > rect[2] || y < rect[1] || y > rect[3])