mozilla / mozilla/pdf.js

[Bug]: wrong bullet points on Edge

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edge-specific font-conversion
Dominant language
JavaScript
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Description

Attach (recommended) or Link to PDF file

bullet-point-demo.pdf

Web browser and its version

Edge

Operating system and its version

Microsoft Windows

PDF.js version

5.7.284

Is the bug present in the latest PDF.js version?

Yes

Is a browser extension

No

Steps to reproduce the problem
  1. Open PDF with Edge
What is the expected behavior?

Bullet points as points.

What went wrong?

Output of this file is like this

Image

The bullet points are not points but some Greek character. The PDF in Chrome on the same PC works. Only Edge is broken.

Any idea why this happens? On other Windows PCs with Edge the output is correct.

Link to a viewer

No response

Additional context

No response

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by opening the attached bullet-point-demo.pdf in Edge on Microsoft Windows with PDF.js 5.7.284, then compare its bullet rendering with Chrome on the same system. Investigate why the bullet points become Greek characters in Edge and verify that the PDF renders bullet points correctly there; no source file or test is identified in the issue.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript
Domain
frontend
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
35/100

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