[Bug]: HC-PDF - Foreground Images not loading, making PDFs unreadable

[kgronowski]

Attach (recommended) or Link to PDF file

https://sbc.org.pl/Content/874002/PDF/BŚ-RIII6831-1921.pdf

Web browser and its version

Chrome 131.0.6778.70 / Firefox 132.0.2

Operating system and its version

Windows 10/11

PDF.js version

4.0.269 and latest

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

Yes

Is a browser extension

No

Steps to reproduce the problem

1. Open linked PDF file in viewer or directly in Firefox or go to https://sbc.org.pl/formats/pdf/web/viewer.html?file=https%3A%2F%2Fsbc.org.pl%2FContent%2F874002%2FPDF%2FB%25C5%259A-RIII6831-1921.pdf

What is the expected behavior?

All images are properly rendered/loaded, texts are readable. Just like in default PDF viewer in chromium based browsers or Adobe Acrobat.

What went wrong?

Foreground images are properly loaded.

Link to a viewer

https://sbc.org.pl/formats/pdf/web/viewer.html?file=https%3A%2F%2Fsbc.org.pl%2FContent%2F874002%2FPDF%2FB%25C5%259A-RIII6831-1921.pdf

Additional context

Problem could be related to sizes of underlying images as other, smaller PDFs created with the same method render just fine.
Example: https://sbc.org.pl/formats/pdf/web/viewer.html?file=https%3A%2F%2Fsbc.org.pl%2FContent%2F849032%2FPDF%2FB%25C5%259A-BTLw3193-1901.pdf

[Snuffleupagus]

Note that each page consists of two separate images, one used as "background" respectively "foreground", and it's the "foreground" images that fail to load.
Hence it isn't technically accurate to say that the quality is bad, since that's what the "background" images look like, but the actual bug is that the "foreground" images are somehow broken and thus fail to render.

[kgronowski]

Hey, thanks for your reply. I've updated the issue accordingly.
Do you have any idea what we can do to make image loading work like in other viewers?