Chinese font not displayed

[123woscc]

Attach (recommended) or Link to PDF file here:
GM／T 0016-2012 智能密码钥匙密码应用接口规范(1).pdf

Configuration:

• Web browser and its version: Microsoft Edge 99.0.1150.39
• Operating system and its version: Windows 10
• PDF.js version: v2.13.216
• Is a browser extension: No

Steps to reproduce the problem:

1. Open the PDF with pdf.js.
2. Found the text of this PDF disappeared.

What is the expected behavior? (add screenshot)
Open with browser built-in viewer

What went wrong? (add screenshot)
Open with pdf.js online demo https://mozilla.github.io/pdf.js/web/viewer.html

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

[Snuffleupagus]

issue14759_reduced.pdf

Interestingly it works fine with disableFontFace = true set, which suggests that the browser (or possibly OTS) is rejecting the font. However, there are no font-related error messages printed in the console.

Edit: When running the font-file, that PDF.js creates, through ttx it seems to stop at the following assert:
https://github.com/fonttools/fonttools/blob/7ee2c9d8918be4158340ca584996ef13cbe9cd84/Lib/fontTools/cffLib/__init__.py#L1572

[123woscc]

Yes, I've also found that disableFontFace = true to display fine. but this will cause other files to fail to display.

Might be easier to handle if it could throw a font-related error.

[dunduenrzc]

I also encounter the same problem. Do you have a solution @123woscc

[Snuffleupagus]

Fixed by PR #15900.