Characters clipped in Chrome when rendering PDFs that use variable weight fonts

[mikecoulhs]

Indesign was used to create the following PDFs.

• indesign-test-1.pdf
• indesign-test-2.pdf

The document uses the RedHatDisplay fonts from Google. Google provides two versions of the fonts, "variable weight" and "static". The first document was created with the "variable weight" font installed. The second document was created with the "static" fonts installed.

The first one renders with the individual characters incorrectly clipped, while the second one renders correctly.

Configuration:

• Web browser and its version: Chrome Version 100.0.4896.127 (Official Build) (x86_64)
• Operating system and its version: MacOS Catalina 10.15.7
• PDF.js version: Version at https://mozilla.github.io/pdf.js/web/viewer.html
• Is a browser extension: No

Steps to reproduce the problem:

1. Using the pdfjs online viewer, open both PDFs in chrome and compare. Notice the clipped characters in the first image.

indesign-test1.pdf:

indesign-test2.pdf:

The problem also appears to occur in Firefox 100.0.1 (64-bit) The problem does NOT appear to occur in Safari (Version 15.0 (15612.1.29.41.4, 15612))

[calixteman]

The bug has already been reported in Firefox: https://bugzilla.mozilla.org/show_bug.cgi?id=1756855

[jrmuizel]

I think this problem may also be happening on https://ontarioliberal.ca/wp-content/uploads/2022/05/Ontario-Liberal-Platform.pdf