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">


AnnotationBorderStyleType,
  AnnotationFieldFlag,
  AnnotationFlag,
  AnnotationReplyType,
  AnnotationType,
  assert,
  escapeString,
  getModificationDate,
  isAscii,
  isString,
  OPS,
  shadow,
  stringToPDFString,
  stringToUTF16BEString,
  unreachable,
  Util,
  warn,
} from "../shared/util.js";
import { Catalog, FileSpec, ObjectLoader } from "./obj.js";
import { collectActions, getInheritableProperty } from "./core_utils.js";
import {
  createDefaultAppearance,
  parseDefaultAppearance,
} from "./default_appearance.js";
import { Dict, isDict, isName, isRef, isStream, Name } from "./primitives.js";
import { ColorSpace } from "./colorspace.js";
import { OperatorList } from "./operator_list.js";
import { StringStream } from "./stream.js";
import { writeDict } from "./writer.js";
class AnnotationFactory {