Incorrect rendering of "flipped text"

[hwine]

Attach (recommended) or Link to PDF file here:
Vendor whitepaper download form

Configuration:

• Web browser and its version:
  • Firefox release 121.0
  • Firefox nightly 125.0a1 (2024-03-04) (64-bit)
• Operating system and its version:
  • Windows version: 10.0.22631.3235
• PDF.js version:
  • latest web at https://mozilla.github.io/pdf.js/web/viewer.html
• Is a browser extension:
  • both yes and direct load from here

Steps to reproduce the problem:

1. Open the file

What is the expected behavior? (add screenshot)
As rendered in Joplin:

Joplin 2.14.17 (prod, win32)

Revision: 094175c

Admonition markdown extension: 1.1.0
Automatic Backlinks to note: 3.0.3
Better Markdown Viewer: 2.0.4
Custom CodeMirror .vimrc: 1.0.6
Embed Search: 2.0.0
Folding in Code Mirror Editor: 2.0.1
Link Graph UI: 1.1.3
Note list and sidebar toggle buttons: 1.0.3
Quick Links: 1.2.2
Slash Commands: Datetime & More: 1.2.1
Templates: 2.2.0
Untagged: 2.2.0

What went wrong? (add screenshot)
As rendered on 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):
n/a

[timvandermeij]

I have found a direct link to the PDF file in the Web Archive (since we don't want contributors to have to unnecessary fill out details in a form, and now it can be used in a linked testcase): https://web.archive.org/web/20240320131329/https://lp.entro.security/hubfs/Gated%20Assets/Onboarding-offboarding-checklist.pdf

I can reproduce the issue with the current master branch on Linux.

[Snuffleupagus]

This was partially fixed by PR #19708, since at least page one and two render correctly now.