Hello

I have posted on nextcloud GIT this issue and they pointed me here.

Here is the issue I have posted - https://github.com/nextcloud/files_pdfviewer/issues/508

Configuration

Web browser and its version: Google Chrome, ver.94.0.4606.81 x64
Operating system and its version: Windows 10, 21H1, build 19043.1288
PDF.js version: v2.9.359
Is a browser extension: no I dont use it as extension

Steps to reproduce the problem:

What is the expected behavior?
Shared PDF created in AutoCAD without borders

![Snímek obrazovky 2021-10-19 120908](https://user-images.githubusercontent.com/11374526/137889425-c0983b5c-a557-46dc-ac32-d50c1dbb9ea9.png)

What went wrong?
Shared PDF created in AutoCAD is with border...
![image](https://user-images.githubusercontent.com/11374526/137888031-11852e03-41a4-48a0-bc0a-3ba0d65bd912.png)

Link to a viewer (if hosted on a site other than mozilla.github.io/pdf.js or as Firefox/Chrome extension):
https://cloud.ostritecky.cz/s/cryrqKarK9CEam8

PDF viewer rendering border around text and objects when creating files with AutoCAD and It looks really bad. Is there a way to switch it off ?

Testfile here:

[Test.pdf](https://github.com/mozilla/pdf.js/files/7372181/Test.pdf)

constructor(params) {
    super(params);
    this._hasText = true;
    const dict = params.dict;
    
    if (!isString(this.data.fieldValue)) {
      this.data.fieldValue = "";
    }
    
    let alignment = getInheritableProperty({ dict, key: "Q" });
    if (!Number.isInteger(alignment) || alignment < 0 || alignment > 2) {
      alignment = null;
    }
    this.data.textAlignment = alignment;
    
    let maximumLength = getInheritableProperty({ dict, key: "MaxLen" });
    if (!Number.isInteger(maximumLength) || maximumLength < 0) {
      maximumLength = null;
    }
    this.data.maxLen = maximumLength;
    
    this.data.multiLine = this.hasFieldFlag(AnnotationFieldFlag.MULTILINE);
    this.data.comb =
      this.hasFieldFlag(AnnotationFieldFlag.COMB) &&
      !this.hasFieldFlag(AnnotationFieldFlag.MULTILINE) &&
      !this.hasFieldFlag(AnnotationFieldFlag.PASSWORD) &&
      !this.hasFieldFlag(AnnotationFieldFlag.FILESELECT) &&
      this.data.maxLen !== null;
  }
  _getCombAppearance(defaultAppearance, font, text, width, hPadding, vPadding) {